Merge pull request #39 from sandvige/master

Allow a user ton bind a collection
update version to 0.5.1
update version to 0.5.1
update version to 0.5.1
update version to 0.5.1
declaring constants for collections

CASSANDRA_MAP
CASSANDRA_LIST
CASSANDRA_SET
prepared stmt consistency does not change handle consistency
change word CLASS to class in keyspace creation
adding tests for binding collection
update version