updated to a rails engine

edit: forgot to fix the content of the controller (namespacing)
updated to a rails engine
more fixes for restructure

* removed dummy app - does not make sense as this is not a generic
engine
* fixed routes ( we dont really want engine name in routes )
* added module structure for controllers
Merge pull request #2 from ohadlevy/11

11
Merge pull request #11 from sseago/engine

updated to a rails engine