Add TODO.md file to keep track of things that aren't necessarily issues

TODO.md

@@ -0,0 +1,7 @@
+#TODO
+
+* Change how POST parameters are passed to better match GET (use args variable).
+* Need PUT example. How?
+* Rename args.lua to get.lua, so it matches post.lua convention.
+* How can I test the whole JSON post thing?
+* BufferedConnection seems too clever. Simplify by removing the buffering and only providing yielding. Worth it? Will make server slower.