chore: Added semantic-release to travis

Author: JohnstonCode

.travis.yml

@@ -44,3 +44,17 @@ script:
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)
+ 
+stages:
+  - test
+  - name: release
+    if: branch = master AND type = push AND fork = false
+    
+ jobs:
+  include:
+    - stage: release
+      language: node_js
+      node_js: '8'
+      script:
+        - npm run build
+        - npm run semantic-release