init
Merge branch 'master' of github.com:xiongbo/railscasts
solve dependence
update env
finish 115 revised: model cache
finish 415: upgrade to rails 4
finish 414 batch api request
finish revised 53: handling exceptions
Merge pull request #59 from williamherry/railscasts053r

Railscasts053r
Fixed #24
Fixed #51
Merge pull request #57 from williamherry/railscasts115-revised

115 revised: model cache & 415: upgrade to rails 4
Fixed #415
Merge pull request #58 from williamherry/railscasts414

finish 414 batch api request
Fixed #53
53r init
add rescue_from
change into Exception
add exceptions_app
add controller of errors
update readme
add zeus testing
add spec filter
add garbage collection