feat(build): add travis script for test execution

.travis.yml

@@ -0,0 +1,22 @@
+language: node_js
+sudo: false
+node_js:
+ - "4.0"
+
+before_script:
+ - npm install
+ - ./node_modules/.bin/grunt build
+
+script:
+ - karma start karma.conf.js
+
+before_install:
+  - npm install -g karma-cli
+  - export CHROME_BIN=chromium-browser
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
+
+after_script:
+ - ./node_modules/.bin/grunt remapIstanbul
+ - ./node_modules/.bin/coveralls < .coverage/lcov.info
+