Update docs to reflect change from Travis to GitHub

Author: chris-garrett

README.md

@@ -1,4 +1,5 @@
-[![Build Status](https://travis-ci.org/go-task/task.svg?branch=master)](https://travis-ci.org/go-task/task)
+![Test](https://github.com/go-task/task/workflows/Test/badge.svg)
+![GoReleaser](https://github.com/go-task/task/workflows/goreleaser/badge.svg)
 
 # Task
 

docs/releasing_task.md

@@ -4,9 +4,9 @@ The release process of Task is done with the help of
 [GoReleaser][goreleaser]. You can test the release process locally by calling
 the `test-release` task of the Taskfile.
 
-The Travis CI should release automatically when a new
-Git tag is pushed to master, either for the artifact uploading (raw executables
-and DEB and RPM packages)
+[GitHub Actions](https://github.com/go-task/task/actions) should release
+artifacts automatically when a new Git tag is pushed to master
+(raw executables and DEB and RPM packages).
 
 # Homebrew