wip-153: Added support for TTL and timestamp in the writer
Merge remote-tracking branch 'origin/wip-153' into wip-153

Conflicts:
	CHANGES.txt
	spark-cassandra-connector-java/src/main/java/com/datastax/spark/connector/japi/RDDAndDStreamCommonJavaFunctions.java
	spark-cassandra-connector/src/main/scala/com/datastax/spark/connector/writer/TableWriter.scala
	spark-cassandra-connector/src/main/scala/com/datastax/spark/connector/writer/WriteConf.scala
	spark-cassandra-connector/src/main/scala/com/datastax/spark/connector/writer/WriteOption.scala
	spark-cassandra-connector/src/test/scala/com/datastax/spark/connector/writer/WriteOptionTest.scala
Follow DRY principle: Refactor repeated code in RDDAndDStreamCommonJavaFunctions (#153).