message: Set version for llvm from brew
diff: @@ -144,7 +144,7 @@ Install the dependencies:
  ```bash
  brew update
  -brew install git automake libtool boost openssl llvm gmp
  +brew install git automake libtool boost openssl llvm@4 gmp
  ```
  Install [secp256k1-zkp (Cryptonomex branch)](https://github.com/cryptonomex/secp256k1-zkp.git):
  