message: document how to run examples
diff: # Sigma v2
  -Nothing to see here...
  +## Examples
  +
  +A development server can be spawned locally to view the examples. Visit `localhost:8000` after executing the following commands:
  +
  + npm install
  + npm run examples
  +
  +You can play around with the files in directory `examples`, the web pages are live-reloaded whenever the code gets changed.
  