Verify Ruby Client Search

[rzezeski]

Verify that the Ruby Riak Client is able to run search requests against Yokozuna like it does Riak Search. This is vital for users that are upgrading from RS.

• Verify PB.

This PR lives here: basho/riak-ruby-client#113

[coderoshi]

Kicked off test and necessary patches https://github.com/basho/riak-ruby-client/tree/er-yokozuna-test

[coderoshi]

merged into basho/riak-ruby-client#119