build(release): add github release

Author: dnlup

.travis.yml

@@ -12,3 +12,14 @@ branches:
   only:
     - master
     - /^greenkeeper.*$/
+    - "/^v[0-9]+\\.[0-9]+\\.[0-9]+-(alpha|beta|rc)\\.[0-9]+$/"
+    - "/^v[0-9]+\\.[0-9]+\\.[0-9]+$/"
+
+before_deploy:
+  - npm run gh:release
+
+deploy:
+  provider: releases
+  api_key: "$CONVENTIONAL_GITHUB_RELEASER_TOKEN"
+  on:
+    tags: true