add netchecker addon

Change-Id: I3e7c20323efdc4a05377782a69109eea5c9ac6b1
diff --git a/README.rst b/README.rst
index 6ff7840..98785ed 100644
--- a/README.rst
+++ b/README.rst
@@ -32,7 +32,7 @@
             cni:
               image: calico/cni
 
-Enable helm-tiller addons
+Enable helm-tiller addon
 
 .. code-block:: yaml
 
@@ -43,6 +43,19 @@
             helm:
               enabled: true
 
+Enable netchecker addon
+
+.. code-block:: yaml
+
+    parameters:
+      kubernetes:
+        master:
+          namespace:
+            netchecker:
+              enabled: true
+          addons:
+            netchecker:
+              enabled: true
 
 Pass aditional parameters to daemons: