Fix Git capitalization in gemspec

Change-Id: Id4b55244e9d2d26dfabfcbe3a62de1a84d570b00
Reviewed-on: https://gerrit.causes.com/22784
Tested-by: Aiden Scandella <aiden@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Add missing @@options to food_critic example

I abbreviated the actual hook, accidentally chopping the @@options
passed to the FoodCritic::Linter in the run_check method. D'oh.

Change-Id: I141aedc5660c4911c7adb7f339ad5975841a5c7e
Reviewed-on: https://gerrit.causes.com/22785
Tested-by: Aiden Scandella <aiden@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Improve error reporting and help

Use our colors to make things pretty. Print the standard help text when
the user doesn't give a target.

Change-Id: I3dea52c9e11b98e0d86146f65efcb0f049415a43
Reviewed-on: https://gerrit.causes.com/22786
Tested-by: Aiden Scandella <aiden@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>