build: update travis

Author: Kikobeats

.travis.yml

@@ -16,8 +16,8 @@ jobs:
       node_js: lts/*
       install: npm install --no-package-lock
       before_deploy:
-        - git config user.email "travis@travis-ci.org"
-        - git config user.name "Travis CI"
+        - git config user.email ${GITHUB_EMAIL:-"travis@travis-ci.org"}
+        - git config user.name ${GITHUB_USER:-"Travis CI"}
         - git remote set-url origin https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git
         - git checkout master
       deploy: