README update.

vendor/zkllvm-metacraft-circuits/README.md

@@ -5,6 +5,6 @@ based on the [zkLLVM toolchain](https://github.com/nilfoundation/zkllvm).
 The purpose of this project is to separate the compilation toolchain
 from the application circuits. The tooling is added as submodule and we
 have a src folder in the projects main folder where the new circuits will
-be added. To compile them, use the run.sh scrypt in folder
-zkllvm-metacraft-circuits/scripts passing the arguments you would pass to
-zkllvm-metacraft-circuits/zkllvm-template/scripts/run.sh.
+be added. In order to build and run tests, currently docker or podman can
+be used. All steps (build + run tests) can be performed by executing the 
+script - scripts/compile_and_run_tests.sh.