code: function apiMethod(path, params, callback) {
      var url    = config.url + path + '?token=' + config.api_key;
      if(params) url = url+= '&'+params;
      return apiRequest(url, callback);
    }
docs: This method makes a private API request.
  @param  {String}   path   The path to the API method
  @param  {Object}   params   String of arguments to pass to the api call
  @param  {Function} callback A callback function to be executed when the request is complete
  @return {Object}            The request object