Add lint script for source code

Author: PeachScript

README.md

@@ -125,6 +125,9 @@ npm run dev
 
 # test
 npm test
+
+# lint
+npm lint
 ```
 
 ## Licence

package.json

@@ -10,7 +10,8 @@
   "scripts": {
     "dev": "webpack-dev-server --inline --hot --quiet --port=8000",
     "build": "rm -rf build/ && NODE_ENV=production webpack --progress --hide-modules",
-    "test": "karma start --single-run"
+    "test": "karma start --single-run",
+    "lint": "eslint ./src/**/*.vue ./src/**/*.js"
   },
   "keywords": [
     "vue",