namespace to module

src/Helpers/babylon.environmentHelper.ts

@@ -1,4 +1,4 @@
-namespace BABYLON {
+module BABYLON {
     /**
      * Represents the different options available during the creation of 
      * a Environment helper.

src/Materials/Background/babylon.backgroundMaterial.ts

@@ -1,4 +1,4 @@
-namespace BABYLON {
+module BABYLON {
     /**
      * Background material defines definition.
      */

src/Tools/babylon.performanceMonitor.ts

@@ -1,4 +1,4 @@
-namespace BABYLON {
+module BABYLON {
 
 	/**
 	 * Performance monitor tracks rolling average frame-time and frame-time variance over a user defined sliding-window