update readme with installation instructions

README.md

@@ -1,12 +1,24 @@
+## EOS - The AMOR focusing reflectometry data reduction software
+
+.. image:: https://img.shields.io/pypi/v/amor-eos.svg
+        :target: https://pypi.python.org/pypi/amor-eos/
+
 Software repository for the neutron reflectometer Amor at the Paul Scherrer Institut, Switzerland
 
 reduction of the raw files (.hdf) to reflectivity files in one of the representations of the **ORSO reflectivity file format**:
 
-> `eos.py`  
-> `neos.py` : version for playing and testing
+> `eos.py --help`  
 
 visualisation of the content of a raw file (.hdf):
 
 > `events2histogram.py`
 
 #TODO: real readme for final system needed.
+
+## Installation
+Create a virtual python environment (>3.8) and install the PyPI package:
+
+> pip install amor-eos
+
+On Windows you can also use the binary eos.exe that you find in the 
+[GitHub Releases]([https://github.com/jochenstahn/amor/releases/latest) section