add helm-tiller as addon

Change-Id: If55918227e84d128229bdaf83291e3688a633848
diff --git a/README.rst b/README.rst
index ddf734c..6ff7840 100644
--- a/README.rst
+++ b/README.rst
@@ -32,6 +32,18 @@
             cni:
               image: calico/cni
 
+Enable helm-tiller addons
+
+.. code-block:: yaml
+
+    parameters:
+      kubernetes:
+        master:
+          addons:
+            helm:
+              enabled: true
+
+
 Pass aditional parameters to daemons:
 
 .. code-block:: yaml