After the initial installation and setup follow these instructions:
Make sure gulp is running in your Terminal.
Edit and save the appropriate Sass files.
View your changes locally on localhost:8000 to see your styles in action.
Commit your changes.
Assuming you have already committed your changes
Bump and tag a new version using npm version prerelease for a test release or npm version release for a production release
Push the new version to npm using npm publish
Finally, push the new tag to git using git push --tags origin
Note: The "version": "###" in pattern library package.json should stay in sync with the client package.json.
From within your platform-client installation run npm install ../platform-pattern-library/
Run gulp in your platform-client install
Check the results in the browser