function watchEvents(firebase, dispatch, events) {
  if (!Array.isArray(events)) {
    throw new Error('Events config must be an Array')
  }
  return events.map((event) => watchEvent(firebase, dispatch, event))
}
Add watchers to a list of events
@param {object} firebase - Internal firebase object
@param {Function} dispatch - Action dispatch function
@param {Array} events - List of events for which to add watchers
@returns {Array} ARray of watchEvent results