I found this blog post but was unable to get it to work:
I'm attempting to use the font at http://netdna.bootstrapcdn.com/font-awesome/3.2.1/font/fontawesome-webfont.ttf?v=3.2.1 - see http://fortawesome.github.io/Font-Awesome/
One thing that seemed fishy to me in the blog post is the screen cap is showing a build action of "Compile". Shouldn't it be an action that's more resource-friendly. Regardless, I couldn't get it to work with other build actions. I'm getting the "value is null" exception that the blog post mentions happens when iOS can't find the font.
Thanks for any help!