Merge branch '3-add-gitlab-ci-support' into 'develop'

Resolve "Add Gitlab CI Support"

Closes #3

See merge request !1

.gitlab-ci.yml

+image: node:4.2.2
+cache:
+  paths:
+  - node_modules/
+stages:
+  - test
+test_async:
+  stage: test
+  script:
+   - npm install -g grunt
+   - npm install
+   - npm run test