docs: improve browserify example readme (#2769)

Author: davideicardi

examples/browser-browserify/README.md

@@ -1,9 +1,11 @@
 # Bundle js-ipfs with Browserify!
 
-> In this example, you will find a boilerplate you can use to guide yourself into bundling js-ipfs with browserify, so that you can use it in your own web app!
+In this example, you will find a boilerplate you can use to guide yourself into bundling js-ipfs with [browserify](http://browserify.org/), so that you can use it in your own web app!
 
 ## Run this example
 
+First install dependencies in the project root directory with `npm install`, then build the browser bundle with `npm run build`. Then in this directory run:
+
 ```bash
 > npm install
 > npm start