Add mailing list and JIRA URLs to README.md.
Merge branch 'b1.0' of github.com:datastax/spark-cassandra-connector into b1.1

Conflicts:
	README.md
Merge branch 'b1.1' of github.com:datastax/spark-cassandra-connector
wip-442: Introduce connection hints to make it possible to configure connections for different purposes differently
wip-442: Add a load balancing policy customization depending on what is the main purpose of the connection
wip-442: Refactored batch creation mechanism

- moved batch creation logic to a separate class BatchMaker
- changed the mechanism of calculating batch size in bytes
- added test suite for BatchMaker
wip-442: Added routing key computation and setting it on bound statements
wip-442: Created PriorityQueueWithUplifting with tests
wip-442: Created QueuedHashMap
wip-442: Introduced SimpleBatchBuilder(renamed) and GroupingBatchBuilder, refactored, added write configuration settings