diff --git a/Gemfile b/Gemfile
new file mode 100644
index 000000000..483454061
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'mdl'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 000000000..45a0d8c43
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,16 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    kramdown (1.7.0)
+    mdl (0.2.1)
+      kramdown (~> 1.5, >= 1.5.0)
+      mixlib-cli (~> 1.5, >= 1.5.0)
+      mixlib-config (~> 2.1, >= 2.1.0)
+    mixlib-cli (1.5.0)
+    mixlib-config (2.1.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  mdl
diff --git a/Makefile b/Makefile
index 4363c4e49..c50606c32 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,24 @@
+all: setup index
+
 index:
 	@TLDRHOME=`pwd` ./scripts/build_index.rb
 	@echo "Index rebuilt."
 
-setup:
+setup: hooks deps
+
+hooks:
 	@cp ./scripts/pre-commit .git/hooks
 	@chmod +x .git/hooks/pre-commit
 	@echo "Git pre-commit hook installed."
+
+deps:
+	@bundle
+	@echo "OK"
 	
-	@gem install mdl --install-dir .gem --no-rdoc --no-ri
-	@echo "Installed required Ruby gems under .gem"
-	
-lint: 
+lint:
 	@GEM_PATH=.gem find pages -exec .gem/bin/mdl {} --style ./scripts/markdown-style.rb 1>&2 \;
 	
 lint-changed:
 	@./scripts/lint-changed.sh
-	
+
+.PHONY: index setup hooks deps lint lint-changed
diff --git a/pages/index.json b/pages/index.json
index cc9d6f229..0751a602c 100644
--- a/pages/index.json
+++ b/pages/index.json
@@ -1 +1 @@
-{"commands":[{"name":"sw_vers","platform":["osx"]},{"name":"du","platform":["osx","linux"]},{"name":"system_profiler","platform":["osx"]},{"name":"systemsetup","platform":["osx"]},{"name":"md5","platform":["osx"]},{"name":"caffeinate","platform":["osx"]},{"name":"head","platform":["osx","linux"]},{"name":"route","platform":["osx"]},{"name":"drutil","platform":["osx"]},{"name":"xed","platform":["osx"]},{"name":"say","platform":["osx"]},{"name":"pbpaste","platform":["osx"]},{"name":"open","platform":["osx"]},{"name":"diskutil","platform":["osx"]},{"name":"locate","platform":["osx","linux"]},{"name":"sysctl","platform":["osx"]},{"name":"pbcopy","platform":["osx"]},{"name":"shutdown","platform":["osx","linux"]},{"name":"airport","platform":["osx"]},{"name":"brew","platform":["osx"]},{"name":"qlmanage","platform":["osx"]},{"name":"networksetup","platform":["osx"]},{"name":"xsltproc","platform":["osx"]},{"name":"wacaw","platform":["osx"]},{"name":"rm","platform":["common"]},{"name":"lsof","platform":["common"]},{"name":"salt-key","platform":["common"]},{"name":"tee","platform":["common"]},{"name":"chown","platform":["common"]},{"name":"handbrakecli","platform":["common"]},{"name":"which","platform":["common"]},{"name":"ls","platform":["common"]},{"name":"sed","platform":["common"]},{"name":"git-remote","platform":["common"]},{"name":"mysql","platform":["common"]},{"name":"ssh","platform":["common"]},{"name":"df","platform":["common"]},{"name":"wget","platform":["common"]},{"name":"ln","platform":["common"]},{"name":"svn","platform":["common"]},{"name":"diff","platform":["common"]},{"name":"cd","platform":["common"]},{"name":"env","platform":["common"]},{"name":"useradd","platform":["common"]},{"name":"cp","platform":["common"]},{"name":"rsync","platform":["common"]},{"name":"gcc","platform":["common"]},{"name":"drush","platform":["common"]},{"name":"sox","platform":["common"]},{"name":"more","platform":["common"]},{"name":"nmap","platform":["common"]},{"name":"less","platform":["common"]},{"name":"tcpdump","platform":["common"]},{"name":"node","platform":["common"]},{"name":"ar","platform":["common"]},{"name":"psql","platform":["common"]},{"name":"gzip","platform":["common"]},{"name":"tmux","platform":["common"]},{"name":"gem","platform":["common"]},{"name":"git-checkout","platform":["common"]},{"name":"gpg","platform":["common"]},{"name":"pip","platform":["common"]},{"name":"yes","platform":["common"]},{"name":"cksum","platform":["common"]},{"name":"usermod","platform":["common"]},{"name":"electrum","platform":["common"]},{"name":"passwd","platform":["common"]},{"name":"echo","platform":["common"]},{"name":"git-branch","platform":["common"]},{"name":"patch","platform":["common"]},{"name":"wc","platform":["common"]},{"name":"telnet","platform":["common"]},{"name":"git","platform":["common"]},{"name":"exiftool","platform":["common"]},{"name":"nc","platform":["common"]},{"name":"mkdir","platform":["common"]},{"name":"rmdir","platform":["common"]},{"name":"fdupes","platform":["common"]},{"name":"sudo","platform":["common"]},{"name":"tr","platform":["common"]},{"name":"mount","platform":["common"]},{"name":"haxelib","platform":["common"]},{"name":"iconv","platform":["common"]},{"name":"zfs","platform":["common"]},{"name":"find","platform":["common"]},{"name":"npm","platform":["common"]},{"name":"git-clone","platform":["common"]},{"name":"ack","platform":["common"]},{"name":"ab","platform":["common"]},{"name":"tail","platform":["common"]},{"name":"traceroute","platform":["common"]},{"name":"curl","platform":["common"]},{"name":"git-status","platform":["common"]},{"name":"tree","platform":["common"]},{"name":"zip","platform":["common"]},{"name":"split","platform":["common"]},{"name":"sshfs","platform":["common"]},{"name":"git-commit","platform":["common"]},{"name":"time","platform":["common"]},{"name":"ping","platform":["common"]},{"name":"sort","platform":["common"]},{"name":"salt-call","platform":["common"]},{"name":"git-init","platform":["common"]},{"name":"screen","platform":["common"]},{"name":"git-push","platform":["common"]},{"name":"man","platform":["common"]},{"name":"cat","platform":["common"]},{"name":"mysqldump","platform":["common"]},{"name":"mv","platform":["common"]},{"name":"git-stash","platform":["common"]},{"name":"cut","platform":["common"]},{"name":"touch","platform":["common"]},{"name":"chmod","platform":["common"]},{"name":"nohup","platform":["common"]},{"name":"ffmpeg","platform":["common"]},{"name":"pwd","platform":["common"]},{"name":"userdel","platform":["common","linux"]},{"name":"ag","platform":["common"]},{"name":"pushd","platform":["common"]},{"name":"srm","platform":["common"]},{"name":"cal","platform":["common"]},{"name":"date","platform":["common"]},{"name":"rename","platform":["common"]},{"name":"grep","platform":["common"]},{"name":"scp","platform":["common"]},{"name":"play","platform":["common"]},{"name":"unzip","platform":["common"]},{"name":"gifsicle","platform":["common"]},{"name":"chsh","platform":["common"]},{"name":"redis-cli","platform":["common"]},{"name":"ps","platform":["common"]},{"name":"mtr","platform":["common"]},{"name":"git-add","platform":["common"]},{"name":"tldr","platform":["common"]},{"name":"php","platform":["common"]},{"name":"tar","platform":["common"]},{"name":"umount","platform":["common"]},{"name":"fswebcam","platform":["common"]},{"name":"deluser","platform":["common"]},{"name":"git-diff","platform":["common"]},{"name":"uname","platform":["common"]},{"name":"alias","platform":["common"]},{"name":"kill","platform":["common"]},{"name":"git-merge","platform":["common"]},{"name":"ipcs","platform":["common"]},{"name":"awk","platform":["common"]},{"name":"convert","platform":["common"]},{"name":"zpool","platform":["common"]},{"name":"pgrep","platform":["common"]},{"name":"bundle","platform":["common"]},{"name":"dig","platform":["common"]},{"name":"apropos","platform":["common"]},{"name":"git-log","platform":["common"]},{"name":"mp4box","platform":["common"]},{"name":"prctl","platform":["sunos"]},{"name":"prstat","platform":["sunos"]},{"name":"svccfg","platform":["sunos"]},{"name":"svcs","platform":["sunos"]},{"name":"svcadm","platform":["sunos"]},{"name":"sha384sum","platform":["linux"]},{"name":"base64","platform":["linux"]},{"name":"findmnt","platform":["linux"]},{"name":"sha1sum","platform":["linux"]},{"name":"netstat","platform":["linux"]},{"name":"systemctl","platform":["linux"]},{"name":"sha256sum","platform":["linux"]},{"name":"firewall-cmd","platform":["linux"]},{"name":"journalctl","platform":["linux"]},{"name":"apt-get","platform":["linux"]},{"name":"mdadm","platform":["linux"]},{"name":"emerge","platform":["linux"]},{"name":"dpkg","platform":["linux"]},{"name":"wall","platform":["linux"]},{"name":"ss","platform":["linux"]},{"name":"aptitude","platform":["linux"]},{"name":"sha512sum","platform":["linux"]},{"name":"watch","platform":["linux"]},{"name":"ip","platform":["linux"]},{"name":"sha224sum","platform":["linux"]},{"name":"xargs","platform":["linux"]},{"name":"tcpflow","platform":["linux"]},{"name":"pacman","platform":["linux"]},{"name":"free","platform":["linux"]},{"name":"iostat","platform":["linux"]},{"name":"shuf","platform":["linux"]},{"name":"md5sum","platform":["linux"]},{"name":"strace","platform":["linux"]},{"name":"wpa_cli","platform":["linux"]}]}
\ No newline at end of file
+{"commands":[{"name":"ab","platform":["common"]},{"name":"ack","platform":["common"]},{"name":"ag","platform":["common"]},{"name":"alias","platform":["common"]},{"name":"apropos","platform":["common"]},{"name":"ar","platform":["common"]},{"name":"awk","platform":["common"]},{"name":"bundle","platform":["common"]},{"name":"cal","platform":["common"]},{"name":"cat","platform":["common"]},{"name":"cd","platform":["common"]},{"name":"chmod","platform":["common"]},{"name":"chown","platform":["common"]},{"name":"chsh","platform":["common"]},{"name":"cksum","platform":["common"]},{"name":"convert","platform":["common"]},{"name":"cp","platform":["common"]},{"name":"curl","platform":["common"]},{"name":"cut","platform":["common"]},{"name":"date","platform":["common"]},{"name":"deluser","platform":["common"]},{"name":"df","platform":["common"]},{"name":"diff","platform":["common"]},{"name":"dig","platform":["common"]},{"name":"drush","platform":["common"]},{"name":"echo","platform":["common"]},{"name":"electrum","platform":["common"]},{"name":"env","platform":["common"]},{"name":"exiftool","platform":["common"]},{"name":"fdupes","platform":["common"]},{"name":"ffmpeg","platform":["common"]},{"name":"find","platform":["common"]},{"name":"fswebcam","platform":["common"]},{"name":"gcc","platform":["common"]},{"name":"gem","platform":["common"]},{"name":"gifsicle","platform":["common"]},{"name":"git-add","platform":["common"]},{"name":"git-branch","platform":["common"]},{"name":"git-checkout","platform":["common"]},{"name":"git-clone","platform":["common"]},{"name":"git-commit","platform":["common"]},{"name":"git-diff","platform":["common"]},{"name":"git-init","platform":["common"]},{"name":"git-log","platform":["common"]},{"name":"git-merge","platform":["common"]},{"name":"git-push","platform":["common"]},{"name":"git-remote","platform":["common"]},{"name":"git-stash","platform":["common"]},{"name":"git-status","platform":["common"]},{"name":"git","platform":["common"]},{"name":"gpg","platform":["common"]},{"name":"grep","platform":["common"]},{"name":"gzip","platform":["common"]},{"name":"handbrakecli","platform":["common"]},{"name":"haxelib","platform":["common"]},{"name":"iconv","platform":["common"]},{"name":"ipcs","platform":["common"]},{"name":"kill","platform":["common"]},{"name":"less","platform":["common"]},{"name":"ln","platform":["common"]},{"name":"ls","platform":["common"]},{"name":"lsof","platform":["common"]},{"name":"man","platform":["common"]},{"name":"mkdir","platform":["common"]},{"name":"more","platform":["common"]},{"name":"mount","platform":["common"]},{"name":"mp4box","platform":["common"]},{"name":"mtr","platform":["common"]},{"name":"mv","platform":["common"]},{"name":"mysql","platform":["common"]},{"name":"mysqldump","platform":["common"]},{"name":"nc","platform":["common"]},{"name":"nmap","platform":["common"]},{"name":"node","platform":["common"]},{"name":"nohup","platform":["common"]},{"name":"npm","platform":["common"]},{"name":"passwd","platform":["common"]},{"name":"patch","platform":["common"]},{"name":"pgrep","platform":["common"]},{"name":"php","platform":["common"]},{"name":"ping","platform":["common"]},{"name":"pip","platform":["common"]},{"name":"play","platform":["common"]},{"name":"ps","platform":["common"]},{"name":"psql","platform":["common"]},{"name":"pushd","platform":["common"]},{"name":"pwd","platform":["common"]},{"name":"redis-cli","platform":["common"]},{"name":"rename","platform":["common"]},{"name":"rm","platform":["common"]},{"name":"rmdir","platform":["common"]},{"name":"rsync","platform":["common"]},{"name":"salt-call","platform":["common"]},{"name":"salt-key","platform":["common"]},{"name":"scp","platform":["common"]},{"name":"screen","platform":["common"]},{"name":"sed","platform":["common"]},{"name":"sort","platform":["common"]},{"name":"sox","platform":["common"]},{"name":"split","platform":["common"]},{"name":"srm","platform":["common"]},{"name":"ssh","platform":["common"]},{"name":"sshfs","platform":["common"]},{"name":"sudo","platform":["common"]},{"name":"svn","platform":["common"]},{"name":"tail","platform":["common"]},{"name":"tar","platform":["common"]},{"name":"tcpdump","platform":["common"]},{"name":"tee","platform":["common"]},{"name":"telnet","platform":["common"]},{"name":"time","platform":["common"]},{"name":"tldr","platform":["common"]},{"name":"tmux","platform":["common"]},{"name":"touch","platform":["common"]},{"name":"tr","platform":["common"]},{"name":"traceroute","platform":["common"]},{"name":"tree","platform":["common"]},{"name":"umount","platform":["common"]},{"name":"uname","platform":["common"]},{"name":"unzip","platform":["common"]},{"name":"useradd","platform":["common"]},{"name":"userdel","platform":["common","linux"]},{"name":"usermod","platform":["common"]},{"name":"wc","platform":["common"]},{"name":"wget","platform":["common"]},{"name":"which","platform":["common"]},{"name":"yes","platform":["common"]},{"name":"zfs","platform":["common"]},{"name":"zip","platform":["common"]},{"name":"zpool","platform":["common"]},{"name":"apt-get","platform":["linux"]},{"name":"aptitude","platform":["linux"]},{"name":"base64","platform":["linux"]},{"name":"dpkg","platform":["linux"]},{"name":"du","platform":["linux","osx"]},{"name":"emerge","platform":["linux"]},{"name":"findmnt","platform":["linux"]},{"name":"firewall-cmd","platform":["linux"]},{"name":"free","platform":["linux"]},{"name":"head","platform":["linux","osx"]},{"name":"iostat","platform":["linux"]},{"name":"ip","platform":["linux"]},{"name":"journalctl","platform":["linux"]},{"name":"locate","platform":["linux","osx"]},{"name":"md5sum","platform":["linux"]},{"name":"mdadm","platform":["linux"]},{"name":"netstat","platform":["linux"]},{"name":"pacman","platform":["linux"]},{"name":"sha1sum","platform":["linux"]},{"name":"sha224sum","platform":["linux"]},{"name":"sha256sum","platform":["linux"]},{"name":"sha384sum","platform":["linux"]},{"name":"sha512sum","platform":["linux"]},{"name":"shuf","platform":["linux"]},{"name":"shutdown","platform":["linux","osx"]},{"name":"ss","platform":["linux"]},{"name":"strace","platform":["linux"]},{"name":"systemctl","platform":["linux"]},{"name":"tcpflow","platform":["linux"]},{"name":"wall","platform":["linux"]},{"name":"watch","platform":["linux"]},{"name":"wpa_cli","platform":["linux"]},{"name":"xargs","platform":["linux"]},{"name":"airport","platform":["osx"]},{"name":"brew","platform":["osx"]},{"name":"caffeinate","platform":["osx"]},{"name":"diskutil","platform":["osx"]},{"name":"drutil","platform":["osx"]},{"name":"md5","platform":["osx"]},{"name":"networksetup","platform":["osx"]},{"name":"open","platform":["osx"]},{"name":"pbcopy","platform":["osx"]},{"name":"pbpaste","platform":["osx"]},{"name":"qlmanage","platform":["osx"]},{"name":"route","platform":["osx"]},{"name":"say","platform":["osx"]},{"name":"sw_vers","platform":["osx"]},{"name":"sysctl","platform":["osx"]},{"name":"system_profiler","platform":["osx"]},{"name":"systemsetup","platform":["osx"]},{"name":"wacaw","platform":["osx"]},{"name":"xed","platform":["osx"]},{"name":"xsltproc","platform":["osx"]},{"name":"prctl","platform":["sunos"]},{"name":"prstat","platform":["sunos"]},{"name":"svcadm","platform":["sunos"]},{"name":"svccfg","platform":["sunos"]},{"name":"svcs","platform":["sunos"]}]}
\ No newline at end of file