Update README.md

README.md

@@ -174,4 +174,17 @@ to export the path variable, i.e.
 $ export PATH=/absolute/path/to/build/bin:$PATH
 ```
 
+Generation of documentation
+===========================
+The Sphinx documentation of all modules, classes, functions etc. can be automatically generated by executing the following commands:
+```
+cd doc
+./add_new_files_to_doc.sh
+make html
+```
+This will generate the documentation in the directory ```doc/build/```.
+It can be viewed by opening ```doc/build/html/index.html``` in your browser of choice.
+
+Building PDF documentation should also be possible, but is not tested yet.
 
+Note: Executing ```add_new_files_to_doc.sh``` is only necessary if new Python modules have been added before the last build.
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