select_method improvement
Merge pull request #34 from dukhlov/select_improvement

Select improvement
Cassandra backend: 'select count' implemented
Merge pull request #35 from ikhudoshyn/cassandra-select-count

Cassandra backend: 'select count' implemented
tests and backend was fixed
tests and backend was fixed
Merge branch 'master' of https://github.com/Mirantis/magnetodb

Conflicts:
	magnetodb/api/amz/dynamodb/action/query.py
	magnetodb/storage/models.py