add a bit of a sales blurb

Signed-off-by: martin f. krafft <madduck@madduck.net>
diff --git a/README b/README
index 566f562..8854ad5 100644
--- a/README
+++ b/README
@@ -14,6 +14,14 @@
 replaces the tool-specific inventory (such as site.pp for Puppet, or
 /etc/ansible/hosts).
 
+reclass allows you to define your nodes through class inheritance, while
+always able to override details of classes further up the tree. Think of
+classes as feature sets, as commonalities between nodes, or as tags. Add to
+that the ability to nest classes (multiple inheritance is allowed,
+well-defined, and encouraged), and piece together your infrastructure from
+smaller bits, eliminating redundancy and exposing all important parameters to
+a single location, logically organised.
+
 In general, the ENC fulfills two jobs:
 
   - it provides information about groups of nodes and group memberships