Update README.md

Author: MattWallingford

README.md

@@ -23,6 +23,7 @@ cd neural-priming
 5. (Optional) - Create a conda environment:
 ```bash
 conda create -n neural-priming python=3.8
+conda activate neural-priming
 ```
 6. Install the required dependencies from the requirements.txt file:
 ```bash