Add note on jest

README.md

@@ -41,6 +41,7 @@ Quill is a registration system designed especially for hackathons. For hackers,
     - [Publish to Docker Hub](#publish-to-docker-hub)
     - [Automated Dependency Updates](#automated-dependency-updates)
   - [Testing](#testing)
+    - [Jest](#jest)
     - [Accessibility](#accessibility)
   - [Contributing](#contributing)
   - [Feedback / Questions](#feedback--questions)
@@ -227,6 +228,10 @@ The repository has been signed up to Dependabot, an automated dependency managem
 
 ## Testing
 
+### Jest
+
+Basic Jest testing has been implemented in the `test.js` file. Currently the only test is to check that the `/login` page returns a HTTP 200 status code. These tests can be run using the `npm run test` command. More Jest tests including snapshots and unit tests should be added as features are created or updated. 
+
 ### Accessibility
 
 Testing for accessibility is a great way to make sure that all hackathon enthusiasts can use Quill, regardless of ability. It's good practice to run accessibility tests on any changes that you've made to ensure that no new accessibility errors were introduced.