Fix encoding, more interop and update nightly version

tonic-examples/src/helloworld/client.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use tokio::net::TcpStream;
 use tower_h2::{add_origin::AddOrigin, Connection};
 

tonic-examples/src/helloworld/server.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use std::time::Duration;
 use tokio::{net::TcpListener, timer::Delay};
 use tonic::{Request, Response, Status};

tonic-examples/src/routeguide/client.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::TryStreamExt;
 use route_guide::{Point, RouteNote};
 use std::time::{Duration, Instant};

tonic-examples/src/routeguide/server.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 mod data;
 
 use futures::{Stream, StreamExt};