Update documentation: remove travis

CONTRIBUTING.md

@@ -23,8 +23,7 @@ contribution. For certain changes, such as updating a part of the documentation
 this is not necessary.
 
 We place a lot of importance on code quality, expect to have a good 
-amount of code coverage present and run frequent unit tests. All commits and pull 
-requests will be automatically tested using [GitHub Actions workflows].
+amount of code coverage present and run frequent unit tests.
 Code coverage is being monitored with [Coveralls].
 
 Locally you can run unit tests by using [pytest].
@@ -48,9 +47,10 @@ feature/<ticketnumber>_description_of_feature
 Feature and bugfix branches should be branched from develop and will be merged 
 back into develop once approved through a pull request.
 
-Every pull request will be run through [Travis-ci]. When providing a pull 
-request, please run the unit tests first and make sure they all pass. Please 
-provide new unit tests to maintain 100% coverage. If you send us a pull request
+All commits and pull requests will be automatically tested using 
+[GitHub Actions workflows]. When providing a pull request, please run 
+the unit tests first and make sure they all pass. Please provide new unit tests
+to maintain 100% coverage. If you send us a pull request
 that doesn't pass all tests, please correct the issue at hand or let us 
 know why it's not working.
 
@@ -60,7 +60,6 @@ know why it's not working.
 [Github page for Atramhasis]: https://github.com/OnroerendErfgoed/atramhasis
 [Github issue]: https://github.com/OnroerendErfgoed/atramhasis/issues
 [development guidelines]: https://atramhasis.readthedocs.io/en/latest/development.html
-[Travis-ci]: https://travis-ci.org/OnroerendErfgoed/atramhasis
 [Coveralls]: https://coveralls.io/r/OnroerendErfgoed/atramhasis
 [pytest]: http://pytest.org
 [GitHub Actions workflows]: https://github.com/OnroerendErfgoed/atramhasis/actions

README.rst

@@ -5,8 +5,6 @@ Atramhasis
         :target: https://pypi.python.org/pypi/atramhasis
 .. image:: https://zenodo.org/badge/DOI/10.5281/zenodo.5801135.svg
         :target: https://doi.org/10.5281/zenodo.5801135
-.. image:: https://app.travis-ci.com/OnroerendErfgoed/atramhasis.svg?branch=develop
-        :target: https://app.travis-ci.com/OnroerendErfgoed/atramhasis 
 .. image:: https://coveralls.io/repos/github/OnroerendErfgoed/atramhasis/badge.svg?branch=develop
         :target: https://coveralls.io/github/OnroerendErfgoed/atramhasis?branch=develop
 .. image:: https://scrutinizer-ci.com/g/OnroerendErfgoed/atramhasis/badges/quality-score.png?b=develop