Added TODO on Equipment

TODO.md

@@ -35,6 +35,10 @@
 
 *   relations to other (specification) documents
 
+*   equipment - allow for specification of special equipment like Wi-fi cards,
+    or a specific machine or a set of machines (environment).  Can be related
+    to objects
+
 ### WUI ###
 
 *   data persistence (HTML5)