Delete .rvmrc
Use rails 4.0.0 in Appraisals
Remove ruby-debug19 for ruby 2.0
Remove rail 3.1 in Appraisals
Use appraisal version 0.5.0
Recreate gemfiles
combustion load all modules
Fix default format of route to feed
Add protected_attributes to gemfile of rails 4.0.0
Recreate gemfiles