code: function formatParameters(params)
  {
      var sortedKeys = [],
          formattedParams = ''
  
      // sort the properties of the parameters
      sortedKeys = _.keys(params).sort()
  
      // create a string of key value pairs separated by '&' with '=' assignement
      for (i = 0; i < sortedKeys.length; i++)
      {
          if (i !== 0) {
              formattedParams += '&'
          }
          formattedParams += sortedKeys[i] + '=' + params[sortedKeys[i]]
      }
  
      return formattedParams
  }
docs: This method returns the parameters as key=value pairs separated by & sorted by the key
  @param  {Object}  params   The object to encode
  @return {String}           formatted parameters