Update the TypeScript latest to get instanceof checks to discriminate similar classes

refs microsoft/TypeScript#7271

Author: Basarat Ali Syed

package.json

@@ -66,7 +66,7 @@
     "rimraf": "^2.4.2",
     "socket.io": "^1.3.6",
     "tslint": "3.14.0-dev.1",
-    "typescript": "2.1.0-dev.20160804",
+    "typescript": "2.1.0-dev.20160809",
     "update-notifier": "1.0.2"
   },
   "devDependencies": {