Set up gitlab pages deploy

.gitignore

@@ -139,4 +139,7 @@ yarn-debug.log*
 yarn-error.log*
 yarn.lock
 .docz/
-._.DS_Store
+._.DS_Store
\ No newline at end of file
+
+# docs
+styleguide/
\ No newline at end of file

.gitlab-ci.yml

@@ -2,6 +2,7 @@ image: node:latest
 
 stages:
   - build
+  - build_documentation
 
 build:
   stage: build
@@ -10,3 +11,12 @@ build:
     - yarn install
     - yarn test
     - yarn build
+
+build-documentation:
+  stage: build_documentation
+  script:
+    - yarn docs:build
+  artifacts:
+    paths:
+      - styleguide
+  only: master