chore: updated readme to remove text caveat

Also updated presence caveat with a reference to y-react.

readme.md

@@ -76,11 +76,12 @@ render(
 
 ## Caveats
 
- 1. Currently the Y Text shared type is not supported. This means that strings
-    in the store do not benefit from the conflict-resolution performed by Yjs.
  1. The Yjs awareness protocol is not supported. At the moment, it is unclear
     if the library is able to support Yjs protocols. This means that, for now,
     support for the awareness protocol is not planned.
+      * This does not mean you cannot use awareness in your projects - see the
+        sister project [y-react](joebobmiles/y-react) for an example of using
+        awareness without the middleware.
 
 # License