Update README.md

Author: Merricx

README.md

@@ -35,6 +35,42 @@ pytest
 python scripts/lint_and_tests.py
 ```
 
+### Circom
+
+In order to target Circom implementation, you need to install Circom and SnarkJS (optional)
+
+Circom:
+
+```
+git clone https://github.com/iden3/circom.git
+cargo build --release
+cargo install --path circom
+```
+
+SnarkJS: 
+
+```
+npm install -g snarkjs@latest
+```
+
+### Noir
+
+In order to target Noir implementation, you need to install Noir as follows:
+
+```
+git clone git@github.com:Mach-34/noir-zk-regex.git
+cd noir-zk-regex
+git checkout fix/efficient-substrings
+cargo install --path packages/compiler/
+```
+
+Optionally, install Barretenberg if we want to test the proving/verification as well:
+
+```
+curl -L https://raw.githubusercontent.com/AztecProtocol/aztec-packages/refs/heads/master/barretenberg/bbup/install | bash
+bbup
+```
+
 ## Example Run
 
 ### Fuzzing