Vendor things

third-party/vendor/diff/README.md

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+# diff.rs
+
+> An LCS based slice and string diffing implementation.
+
+## Install
+
+```toml
+[dependencies]
+diff = "0.1"
+```
+
+## Example
+
+```rust
+extern crate diff;
+
+fn main() {
+    let left = "foo\nbar\nbaz\nquux";
+    let right = "foo\nbaz\nbar\nquux";
+
+    for diff in diff::lines(left, right) {
+        match diff {
+            diff::Result::Left(l)    => println!("-{}", l),
+            diff::Result::Both(l, _) => println!(" {}", l),
+            diff::Result::Right(r)   => println!("+{}", r)
+        }
+    }
+}
+```
+
+prints
+
+```
+ foo
+-bar
+ baz
++bar
+ quux
+```
+
+## License
+
+`diff` is primarily distributed under the terms of both the MIT license and the
+Apache License (Version 2.0).
+
+See LICENSE-APACHE, and LICENSE-MIT for details.