Fixed a Dragonfly deprecation warning
Fixed a Dragonfly deprecation warning

Dragonfly::App[:refinery_images] is deprecated - use Dragonfly.app (for the default app) or Dragonfly.app(:refinery_images) (for extra named apps) instead. See docs at http://markevans.github.io/dragonfly for details
stefanspicer/refinerycms,Eric-Guo/refinerycms,anitagraham/refinerycms,refinery/refinerycms,refinery/refinerycms,refinery/refinerycms,anitagraham/refinerycms,anitagraham/refinerycms,stefanspicer/refinerycms,stefanspicer/refinerycms,Eric-Guo/refinerycms,Eric-Guo/refinerycms