Merge branch 'DATACASS-34' of https://github.com/shvid/spring-data-cassandra
DACASS-48 : WIP :  Refactored QueryOptions and supporting classes to
spring-cassandra.
DATACASS-48 : WIP : Add ConsistencyLevel and RetryPolicy to
Operations/Template 

Added optionsByName and options to all relevant operations.  Changed
main implementation method signatures and all overrides call that now.
DATACASS-48 : CLOSED: Added javadoc for new overload methods to specify
Query Options.
Merge branch 'master' into DATACASS-34