add twitter to Gemfile
Create Model: User, Tweet, RetweetUser
Set Env RSpec 3.0
Add Spec: User
Rename: RetweetUser >> Retweet && Add Spec: Tweet, Retweet
Setup Assets & Views
Create or Update: Tweet, User, Retweet
share vimrc.sample
Add Scaffold: SerialCode
add twitter-bootstrap to Gemfile
Remove Bourbon on Gemfile
Modify CSS
add bootstrap-sass to Gemfile
見た目の調整