Every push to master is automatically released.
If you plan to fork and release and make use of Travis CI to perform continuous deployment you will need to create a tar file containing the GPG key used to sign the release JAR, encrypt this file with Open SSL (OpenSSL 1.0.x).
tar -cvf secrets.tar .gnupg
openssl enc -aes-256-cbc -in secrets.tar -out secrets.tar.aes -k "${KEY}"
The encrypted file then should be stored on an external web site.
Finally the following enviroment variables should be set: