message: docs: use yarn in making your own build
diff: @@ -444,8 +444,8 @@ your environment.::
  # assuming $SUPERSET_HOME as the root of the repo
  cd $SUPERSET_HOME/superset/assets
  - npm install
  - npm run build
  + yarn
  + yarn run build
  cd $SUPERSET_HOME
  python setup.py install
  