Set release name to release tag

Sets only the release version and removes
the merge PR on the release name.

.travis.yml

@@ -119,6 +119,7 @@ jobs:
           api_key: $GITHUB_TOKEN
           file_glob: true
           file: githubout/*
+          name: $RELEASE_TAG
           prerelease: true
           skip_cleanup: true
           on:
@@ -179,6 +180,7 @@ jobs:
           api_key: $GITHUB_TOKEN
           file_glob: true
           file: githubout/*
+          name: $RELEASE_TAG
           skip_cleanup: true
           on:
             branch: master