Update readme

README.rst

-The `foo` package
-=================
+A Python Project Template
+=========================
 
-This is the `foo` package!
+Fork this project and adjust the following files to your needs to get started
+with a new Python project:
+
+- ``requirements.txt`` - a list of Python packages needed for your software
+- ``setup.py`` - this includes meta data for your package and is required
+  for the ``pip install`` procedure
+- ``doc/conf.py`` - the documentation is configured in this file
+- ``.gitlab-ci.yml`` - this file describes the stages and jobs you want to
+  run on the KM3NeT continuous integration server
 
 Installing
 ----------