SLING-7167 Adjust READMEs

add missing README

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1810979 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/jcr-resource-2.0.10/README.md b/jcr-resource-2.0.10/README.md
new file mode 100644
index 0000000..3a1b9e0
--- /dev/null
+++ b/jcr-resource-2.0.10/README.md
@@ -0,0 +1,3 @@
+# Apache Sling Performance Test - JCR Resource 2.0.10
+
+This module is part of the [Apache Sling](https://sling.apache.org) project.