Making the plugin info less ambiguous

Author: nosoop

README.md

@@ -1,2 +1,11 @@
 # Level KeyValues
 A helper plugin that transforms the level's entity string into a `KeyValues` handle.
+
+## Information
+
+The plugin's `KeyValues` handle only does reads.  Any modifications to the `KeyValues` structure are not applied to the map entities.
+
+This was mostly meant as a proof-of-concept (I was interested in reading output rules for a better round win command).
+Never really got around to designing a decent API for property manipulation as [Stripper:Source] does.
+
+[Stripper:Source]: http://www.bailopan.net/stripper/