added venv comment

README.md

@@ -4,6 +4,14 @@ Official Doc: https://cloudscale-ch.github.io/cloudscale-cli/
 
 Settings: .cloudscale.ini
 
+Tipp: Install into venv
+
+    python3 -m venv ~/git/py
+    source ~/git/py/bin/activate
+    pip install cloudscale-cli
+    alias cloudscale='$HOME/git/py/bin/cloudscale'
+
+
 Example CMDs
 
     cloudscale server list