Locked down mongo-odm.
Fixed discriminatorField changes in shard.
Merge pull request #34 from crimsonronin/master

Updates for Mongo ODM master-dev
Changed mongo-odm alias so we can use doctrine-odm-module
Merge pull request #36 from crimsonronin/master

Updated mongo-odm alias
use patched version of mongodb-odm
Complete merge
Added composer.lock for better version control