add cypress test suite info to README

README.md

@@ -15,6 +15,17 @@ List of available parameters:
 
 - `GATSBY_API_URL`: override api url (defaults to location origin)
 
+## Contributing
+
+### Testing you Code
+Before pushing your code you should verify that it will pass our online test
+suite. 
+
+**Cypress Tests**  
+Verify the Cypress test suite by doing the following:
+1. In one terminal screen run `GATSBY_API_URL=https://siasky.net yarn workspace webapp start`
+1. In a second terminal screen run `yarn workspace webapp cypress run`
+
 ## Setting up complete skynet server
 
 A setup guide with installation scripts can be found in [setup-scripts/README.md](./setup-scripts/README.md).