// Create an instance
var pm = new PMPlus({
  listenDomain: 'http://clientDomain.com' // string, array or regex
});

// Listen to a channel
pm.listen('myChannel', function(data, respond) {
  //... do something async or sync
  
  respond(
    true,  // true for success, false for error
    'Got your message' // Response or Error
  );
});

// Create an instance
var pm = new PMPlus({
  sendDomain: 'http://serverDomain.com' 
  // only string allowed, default that can be changed on individual messages
});

// Send a message
pm.send({
  w: iframe.contentWindow // window reference
  channel: 'myChannel',
  data: 'Here you go',
  callback: function(success, info) {
    if(success) {
      console.log('Sucess: ', info);
    } else {
      console.log('Error: ', info);
    }
  }
});