add roadmap

Author: syswu

README.md

@@ -257,6 +257,7 @@ io.fabric8.kubernetes.api.model.Pod pod = new ObjectMapper().readValue(json.toSt
 - 1.0.0: product ready
 - 1.1.0: support webhook
 - 1.2.0: support cluster
+- 1.3.0: Auto API generation
 
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