add TODO.md

2019-09-10 05:53:30 -04:00 · 2019-09-10 05:53:30 -04:00 · 7cbfc5aab0
--- a/TODO.md
+++ b/TODO.md
@ -0,0 +1,5 @@
+Stuff that needs doing:
+
+* `classgen.rb`
+* contributing guidelines
+* markdown style guide