docs: Add more details info on running local tests

README.md

@@ -3,7 +3,7 @@
 
 Grab the color palette from an image using just Javascript.Works in the browser and in Node.
 
-### View the [demo page](https://lokeshdhakar.com/projects/color-thief/) for examples, API docs, and more. 
+### View the [demo page](https://lokeshdhakar.com/projects/color-thief/) for examples, API docs, and more.
 
 ---
 
@@ -13,7 +13,7 @@ Grab the color palette from an image using just Javascript.Works in the browser
 
 + `build/` - Simple script that copies and renames files into the /dist folder.
 + `cypress/` - Browsers tests.
-+ `dist/` - Generated distribution files created by [microbundle](https://github.com/developit/microbundle) package and a couple of files copied via build script. 
++ `dist/` - Generated distribution files created by [microbundle](https://github.com/developit/microbundle) package and a couple of files copied via build script.
 + `examples/` - CSS, JS, and Images for the index.html example page.
 + `src/color-thief-node.js` - Source for the Node (commonjs) compatible version of the script.
 + `src/color-thief.js` - Source for the browser (ES6, AMD, Global var) compatible version of the script.
@@ -23,11 +23,26 @@ Grab the color palette from an image using just Javascript.Works in the browser
 
 ### Running tests
 
-Run Cypress integration tests in Chrome browser.
+There are two sets of tests:
+
+1. Browser tests run with [Cypress](https://www.cypress.io)
+2. Node tests run with [Karma](https://karma-runner.github.io/latest/index.html) and utilizing [Mocha](https://mochajs.org/)
+
+To run both the browser and Node tests:
 
 - `npm run dev` to start local server.
 - `npm run test`
 
+To run just the browser tests with the Cypress UI:
+
+- `npm run dev` to start local server
+- `npm run test:browser`
+
+To run just the Node tests:
+
+- `npm run test:node`
+
+
 ### Adding tests
 
 - Update `cypress/test-pages/index.html` as needed or create a new test page if you need new examples.