import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

third_party/rust/byteorder/README.md

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+This crate provides convenience methods for encoding and decoding numbers in
+either big-endian or little-endian order. This is meant to replace the old
+methods defined on the standard library `Reader` and `Writer` traits.
+
+[![Build status](https://api.travis-ci.org/BurntSushi/byteorder.png)](https://travis-ci.org/BurntSushi/byteorder)
+[![](http://meritbadge.herokuapp.com/byteorder)](https://crates.io/crates/byteorder)
+
+Dual-licensed under MIT or the [UNLICENSE](http://unlicense.org).
+
+
+### Documentation
+
+[http://burntsushi.net/rustdoc/byteorder/](http://burntsushi.net/rustdoc/byteorder/).
+
+The documentation includes examples.
+
+
+### Installation
+
+This crate works with Cargo and is on
+[crates.io](https://crates.io/crates/byteorder). The package is regularly
+updated.  Add it to your `Cargo.toml` like so:
+
+```toml
+[dependencies]
+byteorder = "0.5"
+```
+
+If you want to augment existing `Read` and `Write` traits, then import the
+extension methods like so:
+
+```rust
+extern crate byteorder;
+
+use byteorder::{ReadBytesExt, WriteBytesExt, BigEndian, LittleEndian};
+```
+
+For example:
+
+```rust
+use std::io::Cursor;
+use byteorder::{BigEndian, ReadBytesExt};
+
+let mut rdr = Cursor::new(vec![2, 5, 3, 0]);
+// Note that we use type parameters to indicate which kind of byte order
+// we want!
+assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap());
+assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap());
+```
+
+### `no_std` crates
+
+This crate has a feature, `std`, that is enabled by default. To use this crate
+in a `no_std` context, add the following to your `Cargo.toml`:
+
+```toml
+[dependencies]
+byteorder = { version = "0.5", default-features = false }
+```