This should help users of Debian Wheezy find their way to a potential future
backport.

Thanks to Brian May for reporting this.

fix #22

* Fix and expand manpage
* Use explicit variable names in hook()

Thanks to Vincent Demeester for this idea.

* Refer to README.md
* Add note about config file being a potential security issue

* manpage
* set $VCSH_REPO_NAME (this assumes .git suffix!)

github:
closes: #4

* Handle and sanitize all input in extra block
* Use exported variables instead of daisy-chaining them through functions
* Improve error detection and handling
* Re-order functions in alphabetical order

New feature:
* `vcsh <repo> <gitcommand>` is synonymous with `vcsh run <repo> git <gitcommand>