Update Release instructions - using github actions now

Signed-off-by: Adam.Dybbroe <[email protected]>

RELEASING.md

@@ -3,7 +3,7 @@
 prerequisites: `pip install setuptools twine`
 
 
-1. checkout master
+1. checkout main
 2. pull from repo
 3. run the unittests
 4. run `loghub` and update the `CHANGELOG.md` file:
@@ -25,4 +25,13 @@ See [semver.org](http://semver.org/) on how to write a version number.
 
 6. push changes to github `git push --follow-tags`
 
-7. Verify travis/github-ci tests passed and deployed sdist and wheel to PyPI
+7. Verify the Github actions unit tests passed
+
+8. Create a "Release" on GitHub by going to
+   https://github.com/pytroll/pytroll-pps-runner/releases and clicking "Draft a new
+   release". On the next page enter the newly created tag in the "Tag version"
+   field, "Version X.Y.Z" in the "Release title" field, and paste the markdown
+   from the changelog (the portion under the version section header) in the
+   "Describe this release" box. Finally click "Publish release".
+
+9. Verify the GitHub actions for deployment succeed and the release is on PyPI