feat(example): support app init

add package.json to template, with a dev script

Author: eliranmal

example/template/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "awesome-vue-app",
+  "version": "1.0.0",
+  "description": "example project for vue-cli-template-dev-server",
+  "private": true,
+  "author": "Eliran Malka",
+  "scripts": {
+    "dev": "echo 'running awesome-vue-app dev server...' & wait"
+  }
+}