Add how to use schema examples or docs

[shibd]

Motivation

At present, Node.js clients can set SchemaInfo, it is best to add examples to convenient understanding

pulsar-client-node/src/SchemaInfo.h

Lines 31 to 32 in fa7a6d1

	void SetProducerSchema(std::shared_ptr<pulsar_producer_configuration_t> cProducerConfiguration);
	void SetConsumerSchema(std::shared_ptr<pulsar_consumer_configuration_t> cConsumerConfiguration);

[kushagra-hd]

Any update?

[smolinari]

General question and quite noob-like. Being the client does support schemaInfo(?), does this also mean the node client supports the schema registry feature?

Scott

[kimula]

related issue (for context's sake): #242

[balticore]

Would be really great to have some examples on how to use schema in clients if it is actually supported.