Merge pull request #46 from fireweb/master

414 
#41
problem version
that's the problem #47
Merge branch 'master' of github.com:bay6/railscasts
Fixed #41, Fixed #47
added 053 code base
one more
eager loading
added Fast Rails Commands which is not much
added basic code base
updated rails 4
fixed the ruby and gemset version
bunch of gems include pry
updated rails 4 of configuration changed
migration of database
changed development setting
for forbidden
error handle
routes redirect to 404 controller
error code for json