chore(build): add .travis.yml

Author: adriancarriger

.travis.yml

@@ -0,0 +1,25 @@
+language: node_js
+cache:
+  directories:
+    - node_modules
+notifications:
+  email: false
+node_js:
+  - '7'
+  - '6'
+  - '4'
+before_install:
+  - export CHROME_BIN=chromium-browser
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
+  - npm i -g yarn
+before_script:
+  - npm prune
+after_success:
+  # Release to npm
+  - npm run semantic-release
+  # Send coverage data to Codecov
+  - bash <(curl -s https://codecov.io/bash)
+branches:
+  except:
+    - /^v\d+\.\d+\.\d+$/