Require a newer version of riak-client for protobuf support.  Update dependencies in Gemfile.lock.
Add test coverage for using Riak with protocol buffers.  Fix issue when objects aren't found with protobufs.
Update the way that Riak::DataStore normalizes indexes to be compatible with updated Riak client and protobufs.
Merge pull request #39 from bmorton/protobuf-support

Protocol buffers support for Riak