Add .gitlab-ci.yml

.gitignore

@@ -1 +1,2 @@
-_site
+_site
+public

.gitlab-ci.yml

@@ -0,0 +1,10 @@
+pages:
+  stage: deploy
+  image: jekyll/jekyll
+  script:
+  - jekyll build -d public
+  artifacts:
+    paths:
+    - public
+  only:
+  - master