Done

README.md

@@ -12,7 +12,7 @@
 * [X] Niedersachsen
 * [X] Hessen
 * [X] Rheinland-Pfalz
-* [ ] Sachsen
+* [X] Sachsen
 * [ ] Berlin
 * [ ] Schleswig-Holstein
 * [ ] Brandenburg
@@ -31,6 +31,7 @@
 * [ ] Add "implement me"
 * [ ] Add date for each file
 * [ ] Find license for each
+* [ ] Add attribution name / link, e.g. "Landesamt für Geobasisinformation Sachsen (GeoSN)"
 * [ ] Update them?
 * [ ] Package them / Compress them?
 * [ ] RegionChooser to extract?