directly installing branch from pip

README.md

@@ -19,11 +19,7 @@ To install the `v2_devel` version of the requirements run
 ```
 pip install -r https://raw.githubusercontent.com/intro-stat-learning/ISLP_labs/v2_devel/frozen_requirements.txt;
 pip install -r https://raw.githubusercontent.com/intro-stat-learning/ISLP_labs/v2_devel/torch_requirements.txt;.
-git clone https://github.com/intro-stat-learning/ISLP.git;
-cd ISLP;
-git checkout v2_devel;
-pip install -e .
-cd ..
+pip install git+https://github.com/intro-stat-learning/ISLP.git@v2_devel;
 ```
 
 The labs can now be run from this directory: