Merge pull request #210 from Ultimaker/fix_npm_publish

Do a yarn build so we have 'dist' to publish

Author: ImreBognarUltimaker

.gitlab-ci.yml

@@ -37,6 +37,7 @@ pages:
 publish:
   stage: deploy
   script:
+    - yarn build
     - npm --no-git-tag-version version from-git
     - GIT_SSH_COMMAND="ssh -o StrictHostKeyChecking=no -i ${CI_PROJECT_DIR}/id_rsa" git push git@github.com:Ultimaker/react-web-components.git HEAD:master
     - npm publish