Avro data examples throw APIError: HTTP 422 Invalid schema

[hjespers]

When running either of the two avro examples in the README.md I get the following error

APIError: HTTP 422 Invalid schema: org.codehaus.jackson.JsonParseException: Unexpected character ('i' (code 105)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: java.io.StringReader@637ee04b; line: 1, column: 2]

In looking at the code it appears as if the avro schema is being stringified twice before being sent to the REST Proxy.