Merge pull request #19 from fireweb/master

Fixed #4 form object
rails from xiongbo
Merge branch 'master' of github.com:bay6/railscasts
Update README.md
added 115 before code base
railscast 416 by william
Merge pull request #30 from williamherry/railscasts416

railscast 416 by william
Fixed #6
add railscast115
use cache_query to cache query
add blog and readme
update to rails 4
Merge pull request #31 from zlx/feature/railscast115

Complete railscast115
add cache to computed properties
add cache to controller
finished cached blog
Merge pull request #32 from xiongbo/master

finished 115 r #20
Merge branch 'master' of github.com:bay6/railscasts
move 115 before
added 415 before for rails 4
added the initial version