version bump

switch to yui compressor
Merge pull request #2 from perobertson/gem_version_issue

version bump
added devise
Starting inventory page
links for logging in / out
responsive sign in page
Added a bootstrap switch
Ability to specify which items are for sale
Responsive debug helper in dev mode
Added API ability to create new items
Added UI ability to enter new items
Updated the validations for the item model
Allow use to specify if the item should immediately be for sale
Added index and show to api/items
Generate html from the API
Add the new item to the list when its created
Update tests
Added abilities and user abilities

Added basic tests for the new models
Added helpers to the user to see which abilities they have
schema change after migration