Merge pull request #15 from NYULibraries/chore/use-figs-and-formaggio

Use Figs and Formaggio. Fixed #16, passes on Travis.
Upgrade gem dependencies that upgrade easily, i.e. don't break anything
Upgrade ActsAsTaggableOn and lock in the changes
Generate new ActsAsTaggableOn migrations and update the schema changes
Upgrade Teaspoon and downgrade Jasmine since according to https://github.com/modeset/teaspoon/issues/215, Teaspoon doesn't work with Jasmine 2.0
Remove unnecessary Teaspoon initializer
Regenerate the teaspoon environment file for the new version of Teaspoon
Add the newly generated CoffeeScript spec helper for Jasmine