docs: update contributing

CONTRIBUTING.md

@@ -16,4 +16,17 @@ Then, run `yarn bootstrap` followed by `yarn build`
 
 To run the monorepo, run `yarn dev` in the home directory. This starts a rollup watch service to monitor for any changes in packages.
 
-To run one of the examples, navigate to the examples folder i.e. `cd examples/storybook-6-no-docs`, and run `yarn storybook`
+To run one of the examples, navigate to the examples folder i.e. `cd examples/storybook-6-no-docs`, and run `yarn start`
+
+## Tests
+
+jest: `yarn test`
+lint: `yarn lint`
+
+## Documentation
+
+API documentation in the README.md files is generated automatically: `yarn docs`
+
+## Build all examples
+
+`yarn examples`