Add npm hot reload

Author: dangvanthanh

package.json

@@ -4,7 +4,9 @@
   "description": "Simple clock using vue.js",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "server": "http-server",
+    "watch": "rollup -c -w",
+    "dev": "npm-run-all --parallel watch server"
   },
   "repository": {
     "type": "git",
@@ -18,8 +20,13 @@
   "homepage": "https://github.com/dangvanthanh/vue-clock#readme",
   "devDependencies": {
     "babel-preset-es2015-rollup": "^1.1.1",
+    "http-server": "^0.9.0",
+    "npm-run-all": "^2.2.0",
     "rollup": "^0.32.0",
     "rollup-plugin-babel": "^2.5.1",
     "rollup-plugin-vue": "^2.0.1"
+  },
+  "dependencies": {
+    "rollup-watch": "^2.4.0"
   }
 }

readme.md

@@ -3,3 +3,13 @@
 > Simple clock component using vue.js
 
 ![Simple clock component using vue.js](https://raw.githubusercontent.com/dangvanthanh/vue-clock/master/media/clock-using-vue.png)
+
+## Build
+
+```
+# Install dependencies
+npm install
+
+# Serve with hot reload at localhost:8080
+npm run dev
+```