Icon request: INSPIRE-HEP
[INSPIRE-HEP](http://inspirehep.net/) is the leading literature database for high energy physics. Could you add an icon for it? Their favicon is at http://inspirehep.net/favicon.ico.
If you'd prefer, I could try to make one and submit a pull request - just tell me what needs to be done.

Thanks for taking the time to provide what Font Awesome hasn't.
