fix bug in jshint always returning error
Merge branch 'master' of github.com:Sitebase/git-hooks

* 'master' of github.com:Sitebase/git-hooks:
  replaced xargs lowercase l argument to uppercase L argument because I get illegal argument on my Mac
  Updated README and module_usage
  Remove item from todo list
  pre-commit.sh only runs enabled modules
  Only enabled module when it was not enabled before.
  Hide errors when removing hooks
  Enabled modules on first use
  Provider config helper functions
  Expaned module addon's functionality
  Added string helper functions
  Modularize addons
add info about jshint ignore