update libraries usage

README.md

@@ -14,4 +14,8 @@ In the folder code, there are several Jupyter notebooks that contain the full co
 | polgrad_risky_mdp | Multi-Agent SC on Risky MDP env |
 | polgrad_wcw | Multi-Agent SC on WCW env, including its variants such as Inverted WCW and MWCW |
 | IQN | IQN code, inclusive of monotonically increasing quantile function |
-| QRDQN | QRDQN code, for graphs |
\ No newline at end of file
+| QRDQN | QRDQN code, for graphs |
+
+The only libraries required for this project are numpy, torch, and gym. Additional libraries are not used.
+All code in this repository was written to be used on Google Colab, which runs Python 3.7.11 as checked on 2 September 2021.
+The code was also tested on Computing lab machines, such as gpu12, and they run fine.
\ No newline at end of file