How to configure apn server in PushPlugin?

I'm using $cordovaPush (from ngCordova features) that use PushPlugin for making push notification feature for iOS and Android, I need to implement this feature on iOS using PHP as server-side, currently I choose pushbots.com and it's good, but how can I link local server (that I put php file for pushing a message) with PushPlugin configuration?

this is a basic code in app.js:

angular.module('starter', ['ionic', 'ngCordova', 'starter.controllers', 'starter.services'])
.config(function($compileProvider){
  $compileProvider.imgSrcSanitizationWhitelist(/^\s*(https?|ftp|mailto|file|tel|blob):|data:image\//);
})
.run(function($ionicPlatform, $cordovaPush, $http) {
  $ionicPlatform.ready(function() {

    ..

    if (window.PushNotification) {

      var iOSconfig = { // iOS configuration only
          "badge":"true",
          "sound":"true",
          "alert":"true"
      }

      $cordovaPush.register(iOSconfig).then(function(result) {
          alert(result);
      }, function(err) {
          alert(err);
      });

    }

  });
})

When I run the app, this message is appear to me:

- no valid 'aps-environment' etitlement string found for application

From this message, I understand that I have to set apn server to send notification messages + create certification for enable Push Notification (I already did that and put it on pushbots.com), but I don't have idea how to set that or link it with PushPlugin configuration, I search on this forum and other websites, but I didn't find what I need.