Fix parameterized queries for Cassandra 1.2

The query stringification for non-prepared execution in C* 1.2 was not migrated from `node-cassandra-cql` to `cassandra-driver`. This ports the stringify code from the old driver into Priam for backwards-compatibility purposes.
Merge pull request #38 from godaddy/stringify-binaryv1

Fix parameterized queries for Cassandra 1.2