introduced msIndexedDB in Window mixin

src/Tools/babylon.database.ts

@@ -11,7 +11,7 @@ module BABYLON {
         private isSupported: boolean;
 
         // Handling various flavors of prefixed version of IndexedDB
-        private idbFactory = <IDBFactory> (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || (window as any).msIndexedDB);
+        private idbFactory = <IDBFactory> (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB);
 
         static IsUASupportingBlobStorage = true;
         static IDBStorageEnabled = true;

src/babylon.mixins.ts

@@ -2,6 +2,7 @@
 interface Window {
     mozIndexedDB(func: any): any;
     webkitIndexedDB(func: any): any;
+    msIndexedDB(func: any): any;
     IDBTransaction(func: any): any;
     webkitIDBTransaction(func: any): any;
     msIDBTransaction(func: any): any;