adding netlify badge and build command

Author: mondial7

README.md

@@ -1,4 +1,6 @@
 # sketches
 First trials with p5js
 
+[![Netlify Status](https://api.netlify.com/api/v1/badges/b9459f9a-921e-4a42-ab2b-4f3497dc1419/deploy-status)](https://app.netlify.com/sites/sharp-davinci-94b7bb/deploys)
+
 https://sharp-davinci-94b7bb.netlify.app/

package.json

@@ -7,7 +7,8 @@
   "license": "MIT",
   "private": true,
   "scripts": {
-    "start": "parcel playground/index.html --open"
+    "start": "parcel playground/index.html --open",
+    "build": "parcel build playground/index.html"
   },
   "dependencies": {
     "p5": "^1.4.1"