add visual testing link

Author: bahmutov

README.md

@@ -6,7 +6,7 @@
 
 - What is this? This package allows you to use [Cypress](https://www.cypress.io/) test runner to unit test your React components with zero effort.
 
-- How is this different from [Enzyme](https://github.com/airbnb/enzyme) or [RTL](https://testing-library.com/docs/react-testing-library/intro)? It is similar in functionality BUT runs the component in the real browser with full power of Cypress E2E test runner: [live GUI, full API, screen recording, CI support, cross-platform](https://www.cypress.io/features/). Ohh, and the code coverage is built-in!
+- How is this different from [Enzyme](https://github.com/airbnb/enzyme) or [RTL](https://testing-library.com/docs/react-testing-library/intro)? It is similar in functionality BUT runs the component in the real browser with full power of Cypress E2E test runner: [live GUI, full API, screen recording, CI support, cross-platform](https://www.cypress.io/features/), and [visual testing](https://on.cypress.io/visual-testing). Ohh, and the code coverage is built-in!
 - If you like using `@testing-library/react`, you can use `@testing-library/cypress` for the same `findBy`, `queryBy` commands, see one of the examples in the list below
 
 ## Known problems