change controller: description to caption/title
refactor, fix errors
for asfc
fix a problem: can't request /api/tweets/best,timeline,.. with user_id parameter
fix behavior of tweets#favorites, tweets#retweets
improve speed of rendering tweet (mistake..)
change bootstrap-sass to bootstrap-sass-rails / bundle update
update documents
add unicorn killer
change users#info to users#stats
fix routes
fix spam detection
fix scopes (duplicate tweet when tweets#discoveries)
fix logging (suppress Mysql2::Error logging: duplicate favorite/retweet)