remove "easy" description from the wireless objects idea

README.md

@@ -336,7 +336,7 @@ corresponding object can be highlighted (or the relevant diagram brought up
 with the object in it highlighted).
 
 ### Difficulty
-Easy to moderate. Purr Data's bindelem and pd_bind API are a little
+Moderate. Purr Data's bindelem and pd_bind API are a little
 tricky if one hasn't used them before. However, once that interface is
 understood it is all that is needed to return a complete list of all
 nonlocal objects bound to a particular symbol.