Add thanks to README

Author: JarrodCTaylor

README.md

@@ -4,7 +4,7 @@ The purpose of this repository is to test clojure builds against a variety of ex
 
 ## Actions
 
-Tests are conducted by running one of three actions:
+Tests are conducted by running one of four actions:
 
 Required inputs for all actions are the same. 
     1. The source repository. Defaults to clojure/clojure
@@ -14,3 +14,9 @@ Required inputs for all actions are the same.
 * [test-against-contrib-and-nu](https://github.com/clojure/test.regression/actions/workflows/test-against-contrib-and-nu.yml): Runtime ~4 min. Run tests in contrib repos and open source Nubank repos
 * [test-all-the-things](https://github.com/clojure/test.regression/actions/workflows/test-all-the-things.yml): Runtime ~30 min. Run test in over one hundred community repositories.
 * [test-pinned-repos](https://github.com/clojure/test.regression/actions/workflows/test-pinned-repos.yml): Runtime ~4 min. Run tests against repositories that require pinned SHAs.
+
+## Special Thanks
+
+test.regression was inspired by:
+  * [core_regression](https://github.com/NoahTheDuke/core_regression) by [noahtheduke](https://github.com/NoahTheDuke)
+  * [cljs-oss](https://github.com/cljs-oss/canary) by [darwin](https://github.com/darwin)