Update package.json

Author: Anthropic

package.json

@@ -71,7 +71,7 @@
     "tslint": "^4.0.2",
     "tslint-loader": "^3.2.1",
     "typescript": "~2.0.3",
-    "tv4": "^1.2.7"
+    "tv4": "^1.2.7",
     "webpack": "^2.2.1"
   }
 }