Update README.md

Author: aarondfrancis

README.md

@@ -40,9 +40,7 @@ You can write functions in any of the following runtimes and execute them straig
 
 Any runtime that [Lambda supports](https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html), you can use!
 
-### [Hammerstone](https://www.hammerstone.dev)
-
-Sidecar is maintained by [Aaron Francis](https://twitter.com/aarondfrancis). If you find it useful consider checking out [Refine](https://hammerstone.dev/refine/laravel/docs/main) which allows your users to easily create filters you can run on your app’s data. Works with Laravel and Vue 2 or Vue 3.
+Sidecar is maintained by [Aaron Francis](https://twitter.com/aarondfrancis), go follow me on Twitter! 
 
 ### What It Looks Like