[vcsh] hook system for vcsh

[Dieter Plaetinck]

On Sat, 14 Jan 2012 00:10:35 +0100
Richard Hartmann <richih.mailinglist at gmail.com> wrote:
> 
> https://github.com/RichiH/vcsh/commit/c189913f6c8eebaa6f2dcfcd666ccc4b17ec6c26

> A system of `pre-run`, `pre-run.10`, `pre-run.20` etc is suggested.
> The dot it optional.

i would suggest to add a file extension like .sh too, so that syntax hilighting works in editors