Bulk contacts api

Added api for POST /contacts/bulk.  Also added the ability to have info about responses:

    "methods": [{
      "MethodName": "some_method",
      "response": {
          "parameters": [ same format as request parameters ],
          "examples": [ an array of example responses (JSON objects) ]
      }
    }]

I don't know if this is ideal, but the "test it out" thing just didn't seem appropriate for explaining what's coming back from this method.