Inline streaming calls improve documentation

[kmturley]

You have some good examples in the folder:
https://github.com/njpatel/grpcc/tree/master/examples

However testing a gRPC endpoint, you don't always want to create script files, you may want to test different values via the command line.

Would be great to include an inline streaming example e.g.
var call = client.getHeroesStream().on('data', streamReply).on('status', streamReply); call.write({id:1});

Thanks!