Request-based Broker w/ Dynamo Renderer Locator

* Request based broker example.
* Instead of using the URL generator seen within market-data, it instead finds the location (URL) for a given Renderer from DynamoDB.

![insaneeeeee.gif](http://i.imgur.com/NAiVM8N.gif)
I changed the method name from `options` as it seemed too generic - forgot to change the method call as well. Will update :+1: