Fix for #49, upgrade scala to 2.11.2

Fix for #49, upgrade scala to 2.11.2
Ok. So we could do something like /appmaster/{id}/{id}... or via a query param like /appmaster?ids= to handle the case of more than one id. For too much data being returned for one appId request we could indicate via a detail field in the request what to return. For now we can return some simple data.