changed check for old BSON implementation

mongoid / mongoid-grid_fs

A pure Mongoid/Moped implementation of the MongoDB GridFS specification.

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changed check for old BSON implementation #48

Open jeremy6d opened 10 years ago

jeremy6d commented 10 years ago

It looks like in Mongoid 4.0, Moped::BSON is still defined. This changes the check to Moped::BSON::Binary, which is what is actually needed and which is not present in Mongoid 4.