add 0.0.0.0 as host for dev server

package.json

@@ -8,7 +8,7 @@
     "parcel": "^2.0.0-beta.2"
   },
   "scripts": {
-    "start": "parcel serve ./src/index.html",
+    "start": "parcel serve ./src/index.html --host 0.0.0.0",
     "build": "parcel build ./src/index.html"
   },
   "devDependencies": {