new page for rsync. Fixes #17

Added page for rsync with some examples.

osx/rsync.md

@@ -0,0 +1,21 @@
+# rsync
+
+> Transfers a file either to or from a remote host
+> Does not allow transfer between two remote hosts
+> Can transfer single files or files matched by pattern
+
+- transfer file from local to remote host
+
+`rsync {{path_to_file}} {{remote_host_name}}:{{remote_host_location}}`
+
+- transfer file from remote host to local
+
+`rsync {{remote_host_name}}:{{remote_file_location} {{local_file_location}}`
+
+- transfer all *.js files in current directory to host 'devbox' as user 'mike'
+
+`rsync *.js mike@devbox:~/projects/cakeStore/styles/`
+
+- transfer a directory and all its children from a remote to local
+
+`rsync -r mike@devbox:~/projects/cakeStore /Users/mike/devProjects/`