recipe for Laravel's command line generator, Craft

Craft is like the Rails executable, but for Laravel.  
To confuse things, although it is called "Laravel Craft" (in its own version info) the executable is called `laravel`, but it has a different version number from the general Laravel project (which is 4.1 currently, while Laravel Craft is 1.0.0).


This is my first contribution to Homebrew.  I *think* I'm following the guidelines, but I could have easily missed something, so please forgive me in advance if I'm not submitting this correctly.