Fixed FB Plugin paths to avoid build errors if plugin is enabled.

Author: photonstorm

plugins/fbinstant/src/Leaderboard.js

@@ -4,7 +4,7 @@
  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
  */
 
-var Class = require('../utils/Class');
+var Class = require('../../../src/utils/Class');
 var EventEmitter = require('eventemitter3');
 var LeaderboardScore = require('./LeaderboardScore');
 

plugins/fbinstant/src/Product.js

@@ -4,7 +4,7 @@
  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
  */
 
-var GetFastValue = require('../utils/object/GetFastValue');
+var GetFastValue = require('../../../src/utils/object/GetFastValue');
 
 /**
  * @classdesc

plugins/fbinstant/src/Purchase.js

@@ -4,7 +4,7 @@
  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
  */
 
-var GetFastValue = require('../utils/object/GetFastValue');
+var GetFastValue = require('../../../src/utils/object/GetFastValue');
 
 var Purchase = function (data)
 {

src/boot/Game.js

@@ -34,7 +34,7 @@ if (typeof EXPERIMENTAL)
 
 if (typeof PLUGIN_FBINSTANT)
 {
-    var FacebookInstantGamesPlugin = require('../fbinstant/FacebookInstantGamesPlugin');
+    var FacebookInstantGamesPlugin = require('../../plugins/fbinstant/src/FacebookInstantGamesPlugin');
 }
 
 /**