Add rails generator to stop test server.
Merge pull request #318 from tmcgilchrist/stop_test_server

Add rails generator to stop test server.
Don't use Module#=== explicitly, Array === value returns false although value.class returns Array
be more forgiving about what riak-ruby-client we support
Merge pull request #323 from tomlion/master

Use Object#is_a? instead of Module#===