There is a bash script to upload APK file to GitHub repository after successful TravisCI build.
mkdir $HOME/buildApk/
mkdir $HOME/android/
cp -R app/build/outputs/apk/app-debug.apk $HOME/android/
cd $HOME
git config --global user.email "myemail@myemail.com"
git config --global user.name "Akos Kovacs"
git clone --quiet --branch=master https://plaidshirtakos:$GITHUB_API_KEY@github.com/plaidshirtakos/Trivia-test master > /dev/null
cd master cp -Rf $HOME/android/* .
git add -f .
git remote rm origin
git remote add origin https://plaidshirtakos:$GITHUB_API_KEY@github.com/plaidshirtakos/Trivia-test.git
git add -f .
git commit -m "Travis build $TRAVIS_BUILD_NUMBER pushed"
git push -fq origin master > /dev/null
echo "Done"
I see following lines in log.
On branch master nothing to commit, working tree clean Done