更新最新的rdoc
merge
action cache
Merge remote-tracking branch 'upstream/master'
fragmeng caching
fragemeng cache
sweeper and query cache
cache store
some pull
rails caching
Merge remote-tracking branch 'upstream/master'
Merge branch 'master', remote-tracking branch 'ruby-china/master'
申请翻译rails on rack
Merge pull request #33 from wolflee/master

申请翻译 Rails on Rack
rails cache
Merge remote-tracking branch 'upstream/master'
caching in rails
Merge remote-tracking branches 'ruby-china/master' and 'origin'
完成 Action Mailer 翻译
Merge branch 'master' of https://github.com/ruby-china/rails-guides