Add .envrc
Update to Ruby 2.2.0.
Update to Rails 4.2.
Fix warning.
Update raindrops.
Remove production DB config.
Change pg group.
Change pg group.
Update pg.
Fix warnings.
Update rails_12factor to fix warnings.
Update newrelic_rpm to fix warning.
Update simple_captcha2 to fix warnings.
Merge pull request #3 from JunichiIto/rails-4.2

Update to Ruby 2.2 and Rails 4.2.