Add TODO notes

Author: realityforge

TODO.md

@@ -0,0 +1,15 @@
+# TODO
+
+This document is essentially a list of shorthand notes describing work yet to completed.
+Unfortunately it is not complete enough for other people to pick work off the list and
+complete as there is too much un-said.
+
+## Medium Priority
+
+* https://github.com/beardedtim/react-child-window/blob/master/index.jsx
+* https://www.w3schools.com/jsref/met_win_open.asp
+* https://www.npmjs.com/package/react-portal
+
+Copying styles from source document -
+
+* https://hackernoon.com/using-a-react-16-portal-to-do-something-cool-2a2d627b0202