Add Type Definition for Handlebars.VERSION, Fixes #1647

Author: papasmile

types/index.d.ts

@@ -88,6 +88,8 @@ declare namespace Handlebars {
   // TODO: replace Function with actual signature
   export const decorators: { [name: string]: Function };
 
+  export const VERSION: string;
+
   export function noConflict(): typeof Handlebars;
 
   export class Exception {

types/test.ts

@@ -252,3 +252,7 @@ function testProtoAccessControlControlOptions() {
     }
   );
 }
+
+function testHandlebarsVersion() {
+  let version: string = Handlebars.VERSION;
+}