I've been experimenting with using netdna.bootstrapcdn.com. So far, it's working perfectly in Firefox and Chrome but I'm encountering loading issues in IE - 11 and Edge.
This is how I imported the CSS library:
<link rel="stylesheet" type="text/css" href="//netdna.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" />
The browser console is showing this error message:https://i.sstatic.net/kIovv.jpg
I also attempted to copy/download the CSS styles and paste them into a custom file for importing, but this resulted in breaking the display in all browsers.