<NME> FUNDING.yml
<BEF> patreon: miguelgrinberg
custom: https://paypal.me/miguelgrinberg

<MSG> add github sponsor info to funding

<DFF> @@ -1,2 +1,3 @@
+github: miguelgrinberg
 patreon: miguelgrinberg
 custom: https://paypal.me/miguelgrinberg

add github sponsor info to funding