Update README.md

Author: gbj

examples/islands_router/README.md

@@ -9,6 +9,3 @@ routing when you use islands.
 This uses *only* server rendering, with no actual islands, but still maintains client-side state across page navigations.
 It does this by building on the fact that we now have a statically-typed view tree to do pretty smart updates with 
 new HTML from the client, with extremely minimal diffing.
-
-The demo itself works, but the feature that supports it is incomplete. A couple people have accidentally
-used it and broken their applications in ways they don't understand, so I've renamed the feature to `dont-use-islands-router`.