validateTriggerPresence = triggers => {
    if (triggers.length <= 0) {
      console.warn('MicroModal: \u2757Please specify at least one %c\'micromodal-trigger\'', 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', 'data attribute.')
      console.warn('%cExample:', 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', '<a href="#" data-micromodal-trigger="my-modal"></a>')
      return false
    }
  }
Validates if there are modal triggers present
in the DOM
@param  {array} triggers An array of data-triggers
@return {boolean}