Update FileSaver to include a module definition

FileSaver/FileSaver-tests.ts

@@ -1,5 +1,14 @@
 /// <reference path="FileSaver.d.ts" />
 
+import {saveAs as importedSaveAs} from "file-saver";
+function testImportedSaveAs() {
+    var data: Blob = new Blob(["Hello, world!"], {type: "text/plain;charset=utf-8"});
+    var filename: string = 'hello world.txt';
+    var disableAutoBOM = true;
+
+    importedSaveAs(data, filename, disableAutoBOM);
+}
+
 /**
  * @summary Test for "saveAs" function.
  */

FileSaver/FileSaver.d.ts

@@ -15,7 +15,7 @@ interface FileSaver {
          * @type {Blob}
          */
         data: Blob,
-        
+
         /**
          * @summary File name.
          * @type {DOMString}
@@ -31,3 +31,8 @@ interface FileSaver {
 }
 
 declare var saveAs: FileSaver;
+
+declare module "file-saver" {
+    var fileSaver: { saveAs: typeof saveAs };
+    export = fileSaver
+}