Update documentation to 2018 edition

README.md

@@ -26,12 +26,9 @@ library.
 * [servo/ipc-channel](https://github.com/servo/ipc-channel): Ipc-Channel uses Bincode to send structs between processes using a channel-like API.
 
 ## Example
-```rust
-#[macro_use]
-extern crate serde_derive;
-extern crate bincode;
 
-use bincode::{serialize, deserialize};
+```rust
+use serde::{Serialize, Deserialize};
 
 #[derive(Serialize, Deserialize, PartialEq, Debug)]
 struct Entity {
@@ -45,18 +42,17 @@ struct World(Vec<Entity>);
 fn main() {
     let world = World(vec![Entity { x: 0.0, y: 4.0 }, Entity { x: 10.0, y: 20.5 }]);
 
-    let encoded: Vec<u8> = serialize(&world).unwrap();
+    let encoded: Vec<u8> = bincode::serialize(&world).unwrap();
 
     // 8 bytes for the length of the vector, 4 bytes per float.
     assert_eq!(encoded.len(), 8 + 4 * 4);
 
-    let decoded: World = deserialize(&encoded[..]).unwrap();
+    let decoded: World = bincode::deserialize(&encoded[..]).unwrap();
 
     assert_eq!(world, decoded);
 }
 ```
 
-
 ## Details
 
 The encoding (and thus decoding) proceeds unsurprisingly -- primitive

src/lib.rs

@@ -7,15 +7,13 @@
 //!
 //! ### Using Basic Functions
 //!
-//! ```
-//! extern crate bincode;
-//! use bincode::{serialize, deserialize};
+//! ```edition2018
 //! fn main() {
 //!     // The object that we will serialize.
 //!     let target: Option<String>  = Some("hello world".to_string());
 //!
-//!     let encoded: Vec<u8>        = serialize(&target).unwrap();
-//!     let decoded: Option<String> = deserialize(&encoded[..]).unwrap();
+//!     let encoded: Vec<u8> = bincode::serialize(&target).unwrap();
+//!     let decoded: Option<String> = bincode::deserialize(&encoded[..]).unwrap();
 //!     assert_eq!(target, decoded);
 //! }
 //! ```