chore: better lint script

Author: Guillaume Chau

package.json

@@ -8,7 +8,7 @@
     "dev:shell": "cd shells/dev && webpack-dev-server --inline --hot --no-info",
     "dev:chrome": "cd shells/chrome && webpack --watch --hide-modules",
     "dev:chrome:prod": "cd shells/chrome && cross-env NODE_ENV=production webpack --watch --hide-modules",
-    "lint": "eslint src --ext=js,vue && eslint shells/chrome/src && eslint shells/dev/src && eslint shells/electron/src",
+    "lint": "eslint --ext=js,vue src shells/chrome/src shells/dev/src shells/electron/src",
     "build": "cd shells/chrome && cross-env NODE_ENV=production webpack --progress --hide-modules",
     "run:firefox": "web-ext run -s shells/chrome -a dist -i src",
     "zip": "npm run zip:chrome && npm run zip:firefox",