Update gemfile for rails4
Delete mass assignment and Add strong parameters
Fix typo
RIP active resource
Add eager_load setting
Fix multiple root path error with routes
Remove warning of mass assignment setting
Change assign_attributes, because remove mass massignment
Delete config.whiny_nils
Add strong parameters
Delete auto explain setting
Change validates option
Add config.secret_key_base setting
Update schema.rb
Fix passowrd with user spec
Change confirm options to data : { confirm: '...' }
Merge branch 'feature/update_rails4' into develop