fix compiler bug

src/lib/package.json

 {
   "name": "toastr-ng2",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "Toastr for Angular 2",
   "main": "./toastr.js",
   "typings": "./toastr.d.ts",

stage-release.sh

@@ -9,7 +9,7 @@ rm -rf ./dist/out-tsc
 rm -rf ./deploy
 
 # compile src directory and create d.ts files
-tsc -p src -d
+./node_modules/.bin/tsc -p src -d --module commonjs
 
 # deploy/ serves as a working directory to stage the release.
 mkdir deploy