Added BrowserStack Logo to Readme

Hi,

Thanks for signing up for our open source program! We hope you’ve found it valuable. 

Open source projects like yours power the world of tech, and we’re honored to be helping you. We’ve benefitted from hundreds of open source projects, and now's our time to give back.

I have added BrowserStack Logo under “Testing powered by” heading to the Readme

This helps us reach more open source developers like you, ones who can use BrowserStack’s infrastructure for free and build great products.

Naineet Patel
BrowserStack DevRel

README.md

@@ -70,6 +70,10 @@ The source code for https://svelte.dev, including all the documentation, lives i
 
 Probably not, but it's possible. If you can't seem to access any `.dev` sites, check out [this SuperUser question and answer](https://superuser.com/q/1413402).
 
+## Testing powered by 
+<a target="_blank" href="https://www.browserstack.com/"><img width="200" src="https://www.browserstack.com/images/layout/browserstack-logo-600x315.png"></a><br>
+[BrowserStack Open-Source Program](https://www.browserstack.com/open-source)
+
 ## License
 
 [MIT](LICENSE)