chor: update modules version

Author: lini

demo/package.json

@@ -12,8 +12,7 @@
   "dependencies": {
     "nativescript-background-http": "../src",
     "nativescript-theme-core": "~1.0.4",
-    "tns-core-modules": "~3.4.0",
-    "tns-template-blank-ts": "3.4.3"
+    "tns-core-modules": "~4.0.0"
   },
   "devDependencies": {
     "awesome-typescript-loader": "~3.1.3",