Added. Gemfileにgemを追加

以下gemを追加しました
bootstrap-sass
factory_girl_rails
faker
paperclip
pry-rail
shoulda-matchers
New. food taste food_taste factory
Added. Food spec

validateのテスト
Added. Taste validate
Modified. layout yield containerで囲む
Merge pull request #11 from tikkss/food

Added. Gemfileにgemを追加