better use of class instance variables that won't hit uninitialized constant problem
better use of class instance variables that won't hit uninitialized constant problem

leighhalliday/delayed_paperclip,hewrin/delayed_paperclip,cgunther/delayed_paperclip,jrgifford/delayed_paperclip,ombulabs/delayed_paperclip,matt0903/delayed_paperclip,owahab/delayed_paperclip