riak-1.0.0.0: Changes.md

* 1.0
  - No longer expected to work with riak <= 2
  - CRDT functionality, including high-level interface
	and quickCheck tests
  - Basic yokozuna search functionality
  - CRDT benchmarking suite
  - Bugfixes
  - Tested on both 2.0.x and 2.1.x