Merge branch 'master' of github.com:xju2/root_gnn

Author: xju

README.md

@@ -4,6 +4,7 @@ GNN classification for reconstructed HEP events stored in ROOT
 ## Install
 ```bash
 conda create --name gnnana python=3.7
+conda activate gnnana
 conda install -c conda-forge jupyterlab
 conda install -c conda-forge root