Added note about the Jaeger Operator (#116)

Signed-off-by: Juraci Paixão Kröhling <[email protected]>

README.md

@@ -2,6 +2,14 @@
 
 # Jaeger Kubernetes Templates
 
+## Consider using the Jaeger Operator!
+
+The current recommended way of installing and managing Jaeger in a production Kubernetes cluster is via the [Jaeger Operator](https://github.com/jaegertracing/jaeger-operator).
+
+You can still use, report issues and send pull-requests against this repository, but not all features from the Operator are possible or will be backported to the templates from this repository here.
+
+Use the templates from this repository if you need a quick start and don't want to install the Operator.
+
 ## How to contribute
 
 Please see [CONTRIBUTING.md](https://github.com/jaegertracing/jaeger-kubernetes/blob/master/CONTRIBUTING.md)