Updated the read me

Marc Rooding · Marc Rooding · commit a0194f0edb6d · 2019-05-14T10:21:55.000+02:00
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 # flink-avro-state-serialization
 
 Sample project showcasing how to use Apache Flink custom serializers to support state schema migration using Apache Avro.
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+## Avrohugger generation
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+There's a branch called `avro-generated` which contains the setup to generate Classes based on Avro schemas
