fix(application): set injector property when bootstraping the app

Closes #1391

Author: vsavkin

lib/application.dart

@@ -179,7 +179,7 @@ abstract class Application {
       publishToJavaScript();
       return zone.run(() {
         var rootElements = [element];
-        Injector injector = createInjector();
+        injector = createInjector();
         ExceptionHandler exceptionHandler = injector.getByKey(EXCEPTION_HANDLER_KEY);
         // Publish cache register interface
         injector.getByKey(JS_CACHE_REGISTER_KEY);

test/bootstrap_spec.dart

@@ -30,5 +30,15 @@ void main() {
       applicationFactory()..selector('div[ng-bind]')..run();
       expect(body.text).toEqual('{{ignor me}}works');
     });
+
+    describe("run", () {
+      it("should set the injector property", () {
+        var body = setBody('<div>{{"works"}}</div>');
+        var application = applicationFactory();
+        application.run();
+
+        expect(application.injector).toBeNotNull();
+      });
+    });
   });
 }