Support unshort.link

I assume you are already using unshort.link and came here to look how you can help the project. 

Please consider supporting on a yearly bases, so I can continue devoting time time to the open source project on Github (https://github.com/simonfrey/unshort.link/) and cover the infrastructure cost for the main unshort server on https://unshort.link/

Thank you for your support!

Simon