indicate how to support us (#72)

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: game-ci
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

README.md

@@ -37,6 +37,14 @@ To help improve the documentation, please find the docs [repository](https://git
 
 To contribute to this project, kindly read the [contribution guide](./CONTRIBUTING.md).
 
+## Support us
+
+GameCI is free for everyone forever.
+
+You can support us at [OpenCollective](https://opencollective.com/game-ci).
+
 ## Licence
 
-[MIT](./LICENSE)
+This repository is [MIT](./LICENSE) licensed.
+
+This includes all contributions from the community.