* lib/warbler/config.rb: rename @rails_root to @app_root
* lib/warbler/config.rb: rename @rails_root to @app_root

mkristian/warbler,idibon/warbler,fedenusy/warbler,ctreatma/warbler,mkristian/warbler,idibon/warbler,ctreatma/warbler,mkristian/warbler,atambo/warbler,ctreatma/warbler,idibon/warbler,fedenusy/warbler,fedenusy/warbler,ctreatma/warbler,fedenusy/warbler,atambo/warbler,idibon/warbler