Update README.md

Author: RaymondMouthaan

README.md

@@ -7,6 +7,10 @@
 
 The goal of the *Docker Flow Swarm Listener* project is to listen to Docker Swarm events and send requests when a change occurs. At the moment, the only supported option is to send a notification when a new service is created, or an existing service was removed from the cluster. More extensive feature support is coming soon.
 
+Supported archetectures are:
+- linux-amd64
+- linux-arm
+
 Please visit the **[project documentation](http://swarmlistener.dockerflow.com)** for more info or join the #df-swarm-listener Slack channel in [DevOps20](http://slack.devops20toolkit.com/) if you have any questions, suggestions, or problems.
 
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