improved readme

Author: timea-solid

README.md

@@ -5,3 +5,16 @@ At the moment to start a tracker you have to configure the config file in turtle
 
 Would be good create a mintNew method to allow new ones to be created in the UI.
 
+# Testing Guide
+
+## Running Tests
+
+Only ESlint is active on this repo.
+
+```bash
+# Run linting only
+npm run lint
+
+# Auto-fix linting issues
+npm run lint-fix
+```