Roadmap: Section about documentation

Author: einarf

ROADMAP.md

@@ -18,6 +18,11 @@ The plan is to revamp the project structure and making the parse result a lot mo
 collect the actual data. We then provide methods for obtaining the data in
 various ways after the parse is done.
 
+## Documentation
+
+Write proper docs using either readthedocs or github pages.
+A `docs` branch was started a while ago and we should revive that.
+
 
 ## Improved Visualization