updated install command, this closes #1

README.md

@@ -12,7 +12,7 @@ You are free to use this code, but no warranty whatsoever is given.
 To install the package, run the command below. It is assumed that you have git and pip installed on your system.
 
 ```bash
-pip install git+https://gitlab01.esss.lu.se/ess-bp/ess-python-tools.git -U
+pip install git+https://gitlab01.esss.lu.se/ess-bp/ess-python-tools.git -U --user
 ```
 
 ## Usage