message: Document running tests against Graph API
diff: @@ -306,7 +306,9 @@ These steps are not required to use this library.
  ```npm pack``` bundles the npm module.
  -```npm test``` runs tests.
  +```npm test``` runs tests of the core library (URL parsing, mock responses, etc)
  +
  +```npm run test:types``` to run tests against the Graph API for users, groups, Excel, OneNote, etc.
  To build only browser version:
  ```
  