jnicklas/carrierwave — pull request #724 by federomero (2012-04-27 21:30:29+00:00)
Title: Check for PADRINO_ROOT explicitly when setting CarrierWave.root

As padrino components can be used as standalone components in a sinatra application (without defining `PADRINO_ROOT`), carrierwave should check that `PADRINO_ROOT` is defined explicitly, instead of assuming it is.