Icon request: fa-baseball
Hi,

First, thank you for your fonts. They really are awesome.

I think it would be fantastic to have an icon for "Baseball".

Example : 

![15961-baseball-ball1](https://user-images.githubusercontent.com/22425397/41218340-09430bb4-6d5b-11e8-9b91-22fe7a579417.png)

More examples [here](http://freevector.co/tag/baseball).
