Changed BatchStatement sample
Samples: prepare once, bind multiple times
Updated build scripts for 2.0 release
Added EntityContext package to the upgrade guide 2.0
Readme: Added intro for prepared statements
Updated README to include 2.0 doc and build files
BoundStatement.SetRoutingKey method
Merge branch '1.0' into 2.0

Conflicts:
	Cassandra/BoundStatement.cs
Added 3 tests on TokenAware policy for simple and bound statements.
Tests: LoadBalancingPolicyTests always call ccm remove