add ci/cd for gitlab

gitlab-ci.yml

@@ -0,0 +1,16 @@
+pages:
+  stage: deploy
+  script:
+    - mkdir .public
+    - cp index.html .public
+    - cp FavouriteQuotes.json .public
+    - cp app.js .public
+    - cp style.css .public
+    - cp favicon.ico .public
+    - rm -rf public
+    - mv .public public
+  artifacts:
+    paths:
+      - public
+  only:
+    - master