Change wording of README warning to allow for backwards compatibility.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/integration/elasticsearch/trunk@1538886 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/README.txt b/README.txt
index 0be561b..dca3f8e 100644
--- a/README.txt
+++ b/README.txt
@@ -16,8 +16,8 @@
 Compatibility
 ------------
 
-This version of this component is only compatible with ManifoldCF 1.5 and above,
-and cannot be used with earlier releases of ManifoldCF.
+This version of this component is fully functional with Apache ManifoldCF 1.5 and
+above.  It is backwards compatible with earlier versions as well.
 
 Instructions for Building Apache ManifoldCF Plugin for Elastic Search from Source
 -----------------------------------------------------------------------------