Update project layout

README.md

@@ -1,5 +1,33 @@
-# xopp2py
+# Python interface to Xournal++ (.xopp) file format
 
-Python interface to .xopp (Xournal++) files.
+## Packages
 
-The only dependency is Python 3. (developed with Python 3.10)
+This project contains the following packages, under `src`:
+ - xopp2py
+ - xopp2oml
+
+### xopp2py
+
+Python interface to .xopp (Xournal++) 
+
+Dependencies: Python3
+
+### xopp2oml
+
+XOPP to OML converter
+
+Dependencies: Python3, Jinja2, xopp2py
+
+#### Entry point: xopp2oml.convert
+
+Python script that takes as input as .xopp file and produces as output an .oml file.
+
+
+## Running the tests
+
+The tests are not included in the packages themselves, but as a separate script.
+
+To run the tests, make sure the packages are installed, and run:
+```
+python test/run_tests.py
+```