Update README.md

README.md

 The following steps for installing sortem can be done through conda or pip. The easiest way is to install the requirements through conda as the gpu libraries and other requirements are downloaded with the python packages. If you install the packages through pip the nvidia modules will not be installed with it. In addition installing it into a conda environment avoids breaking paths. 
 
-**1) download the repository**:  conda create --name sortem
 
-**2) Create conda enviroment**:  conda create --name sortem
 
-**3) activate the environment**: conda activate sortem
+**1) Create conda enviroment**:  conda create --name sortem
+
+**2) activate the environment**: conda activate sortem
+
+**3) download the repository**:  pip install --extra-index-url https://gitlab.au.dk/au482896/sortem
 
 **4) install the requirements**: conda install --file requirements.txt