secrethub: add page (#3794)

* secrethub: add page

* Use token syntax for piping a secret value to write

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>
Co-authored-by: Zlatan Vasović <zlatanvasovic@gmail.com>

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>
Co-authored-by: Zlatan Vasović <zlatanvasovic@gmail.com>

pages/common/secrethub.md

@@ -0,0 +1,24 @@
+# secrethub
+
+> A tool to keep secrets out of config files.
+> More information: <https://secrethub.io>.
+
+- Print a secret to stdout:
+
+`secrethub read {{path/to/secret}}`
+
+- Generate a random value and store it as a new secret (version):
+
+`secrethub generate {{path/to/secret}}`
+
+- Store a value from the clipboard as a new secret (version):
+
+`secrethub write --clip {{path/to/secret}}`
+
+- Store a value supplied on stdin as a new secret (version):
+
+`echo "{{secret_value}}" | secrethub write {{path/to/secret}}`
+
+- Audit a repository or secret:
+
+`secrethub audit {{path/to/repo_or_secret}}`