Add 1.2 support
Test 1.2 on travis
Merge pull request #175 from brainopia/master

Cassandra 1.2 support
By default drop_keyspace should use current keyspace
Merge pull request #176 from brainopia/master

By default Cassandra#drop_keyspace should use current keyspace
newer version of thrift client
Merge branch 'master' of github.com:penguinxr2/cassandra