fix: add semantic releases

.travis.yml

@@ -1,25 +1,18 @@
 language: node_js
 sudo: true
-node_js: 6
+node_js: 8
 script:
 - npm run lint
 - npm run compile
 deploy:
-- provider: npm
-  email: [email protected]
-  api_key: $NPM_API_KEY
+- provider: script
+  skip_cleanup: true
+  script: npx semantic-release
   on:
-    tags: true
-    repo: watson-developer-cloud/ui-components
+    node: 8
 - provider: script
   script: npm run deploy
   on:
     branch: master
     repo: watson-developer-cloud/ui-components
   skip_cleanup: true
-- provider: releases
-  api_key: $GH_TOKEN
-  on:
-    tags: true
-    repo: watson-developer-cloud/ui-components
-  skip_cleanup: true