Mention GitHub Actions CI in CONTRIBUTING.md

CONTRIBUTING.md

@@ -13,31 +13,30 @@ problems and make sure they don't come back.
 
 So if you can reproduce your problem in a spec, that would be awesome! If you can't, please
 let us know how we can make this easier for you. Also, provide code and the WSDL of the
-service you're working with so others can try to come up with a spec for your problem.
+service you're working with, so others can try to come up with a spec for your problem.
 
-After we have a failing spec, it obviously needs to be fixed. Make sure your new spec is the
-only failing one under the `spec` directory. Travis only runs the "unit tests" at `spec/savon`,
+After we have a failing spec, it needs to be fixed. Make sure your new spec is the
+only failing one under the `spec` directory. CI only runs the "unit tests" at `spec/savon`,
 but Savon actually has some additional specs at `spec/integration`, which you need to run locally 
-to make sure the integration with real world services still works.
+to make sure the integration with real-world services still works.
 
-These specs are not run by Travis, because the services are not guaranteed to work all the time.
+These specs are not run by CI, because the services are not guaranteed to work all the time.
 
-Please follow this basic workflow for pull requests:
+Please follow this workflow for Pull Requests:
 
 * [Fork the project](https://help.github.com/articles/fork-a-repo)
 * Create a feature branch and make your bug fix
 * Add tests for it!
-* [Send a pull request](https://help.github.com/articles/using-pull-requests)
-* [Check that your pull request passes the build](https://travis-ci.org/savonrb/savon/pull_requests)
-
+* [Send a Pull Request](https://help.github.com/articles/using-pull-requests)
+* [Check that your Pull Request passes the build](https://github.com/savonrb/savon/actions?query=workflow%3ARuby)
 
 **Improvements and feature requests**
 
 If you have an idea for an improvement or a new feature, please feel free to
-[create a new issue](https://github.com/savonrb/savon/issues/new/choose) and describe your idea
+[create a new Issue](https://github.com/savonrb/savon/issues/new/choose) and describe your idea
 so that other people can give their insights and opinions. This is also important to avoid
 duplicate work.
 
-Pull requests and issues on GitHub are meant to be used to discuss problems and ideas,
+Pull Requests and Issues on GitHub are meant to be used to discuss problems and ideas,
 so please make sure to participate and follow up on questions. In case no one comments
 on your ticket, please keep updating the ticket with additional information.