update readmes in certain directories to work with qmk.fm

keyboards/clueboard/readme.md

@@ -0,0 +1,4 @@
+Clueboard keyboard firmware
+======================
+
+TODO: to be updated.

keyboards/cluepad/readme.md

@@ -0,0 +1,4 @@
+Cluepad number pad firmware
+======================
+
+TODO: to be updated.