Enhance integration tests so they can be run with external Cassandra or Spark cluster.
Merge branch 'master' of https://github.com/datastax/spark-cassandra-connector into it-tests
Added missing information about need to copy the test jar to Spark nodes when running integration tests with an external Spark cluster.
Merge branch 'b1.0' of https://github.com/datastax/cassandra-driver-spark into it-tests

Conflicts:
	README.md
	src/it/scala/com/datastax/spark/connector/rdd/CassandraRDDSpec.scala
	src/it/scala/com/datastax/spark/connector/util/SparkServer.scala
Minor fix in README.md
Merge pull request #93 from datastax/it-tests

It tests, fixes #66