ahoward/mongoid-grid_fs — pull request #31 by gautamrege (2013-10-11 11:16:15+00:00)
Title: Mongoid has refactored session options. Getting undefined method `default_collection_name=' 

Commit mongoid/mongoid#cc7a0e7 (master) has removed `default_collection_name`. I have made the fix for this. However, the test case for collection_name fails because the collection name is internally stored as a Symbol and not a string.