Merge pull request #4692 from dawidk92/patch-1

Add Sherlo to testing tools list in README

README.md

@@ -575,6 +575,7 @@ This list results from Pull Requests, reviews, ideas, and work done by 1600+ peo
   * [Requestly](https://requestly.com/) - Open-source Chrome Extension to Intercept, Redirect and Mock HTTP Requests.
     Featuring [Debugger](https://requestly.com/products/web-debugger/), [Mock Server](https://requestly.com/products/mock-server/), [API Client](https://requestly.com/products/api-client/) and [Session Recording](https://requestly.com/products/session-book/).  Redirect URLs, Modify HTTP Headers, Mock APIs, Inject custom JS, Modify GraphQL Requests, Generate Mock API Endpoints, Record session with Network & Console Logs. Create upto 10 rules in Free Tier. Free for open-source.
   * [seotest.me](https://seotest.me/) - Free on-page SEO website tester. 10 free website crawls per day. Useful SEO learning resources and recommendations on how to improve the on-page SEO results for any website regardless of technology.
+  * [Sherlo](https://sherlo.io) - Visual regression testing for React Native apps. Free plan: 1,000 snapshots/month, iOS & Android simulators.
   * [snippets.uilicious.com](https://snippets.uilicious.com) - It's like CodePen but for cross-browser testing. UI-licious lets you write tests like user stories and offers a free platform - UI-licious Snippets - that allows you to run unlimited tests on Chrome with no sign-up required for up to 3 minutes per test run. Found a bug? You can copy the unique URL to your test to show your devs exactly how to reproduce the bug.
   * [SSR (Server-side Rendering) Checker](https://www.crawlably.com/ssr-checker/) - Check SSR (server-side rendering) for any URL by visually comparing the server rendered version of the page with the regular version.
   * [testingbot.com](https://testingbot.com/) - Selenium Browser and Device Testing, [free for Open Source](https://testingbot.com/open-source)