Merge branch 'doc/venv_kernel' into 'master'

create kernel for venv

See merge request detectors/pycalibration!260

README.rst

@@ -70,15 +70,26 @@ In additional install pyDetLib package, which is required for many notebooks::
     pip install -r requirements.txt
     pip install .
 
+++++++++++++++++++++++++++++++++++++++++++++++++++
+Setting an ipython kernel for virtual environments
+++++++++++++++++++++++++++++++++++++++++++++++++++
+
+To set a kernel for your virtual environment::
+
+    source /path/to/new/virtual/environment/bin/activate
+    pip install ipykernel
+    python -m ipykernel install --user --name <virtenv-name> --display-name "virtenv-display-name"
+
+This can be useful for Jupyter notebook tools as "max-jhub.desy.de".
 
 Development Installation
 ------------------------
 
-For a development installation in your home directory, which automatically
+For a development installation, which automatically
 picks up (most) changes, first install the dependencies as above,
-but then install the tool-chain separately in development mode::
+but then install the tool-chain separately in development mode (install in home directory using --user, in case of using Anaconda/3)::
 
-   pip install -e . --user
+   pip install -e .
 
 
 Activate Offline calibration