rails g migration AddLikeToIdeas like:integer
edit routes

add PUT /ideas/:id/like
edit views/ideas/show

add like button
edit controllers/ideas

add like
edit migrate

edit add like to ideas
edit controllers/ideas

edit like
modelの操作をrespond_toの外にだした

edit IdeasConrtoller#like
fix IdeasController#like
fix routes
idea_like_pathに引数を追加
routesのスタイルを修正した
Merge pull request #9 from remain/issue/2

likeボタンを追加しました #2