Icon Request: fa-artstation
Please consider adding the Artstation logo. Use cases would be for artist that want to link their Artstation portfolios. The official branding is available [here](https://cdna.artstation.com/misc/artstation_logos.zip). It's all Adobe Illustrator files though so I have converted the logo mark to an svg to make it easier.
[ArtStation-logomark-dark.zip](https://github.com/ForkAwesome/Fork-Awesome/files/1740814/ArtStation-logomark-dark.zip)

Preview of the above zipped svg:
![artstation-logomark-dark](https://user-images.githubusercontent.com/10608836/36434814-92be2a3c-1625-11e8-99c6-fa864e7c1a83.png)

