Test stream

[Y-Nak]

Ref #153

[bschwind]

I tried running the stream example over and over, but I always receive an error:

brian cameleon $ cargo run --release --example stream
    Finished release [optimized] target(s) in 0.07s
     Running `target/release/examples/stream`
thread 'main' panicked at 'should receive a payload: InvalidPayload("trailer status indicates error: DataDiscarded")', cameleon/examples/stream.rs:31:14
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace