more dual licensing tweaks

COPYING

@@ -0,0 +1,3 @@
+This project is dual-licensed under the Unlicense and MIT licenses.
+
+You may use this code under the terms of either license.

Cargo.toml

@@ -8,7 +8,7 @@ homepage = "https://github.com/BurntSushi/tabwriter"
 repository = "https://github.com/BurntSushi/tabwriter"
 readme = "README.md"
 keywords = ["tabs", "elastic", "aligned", "whitespace", "table"]
-license = "Unlicense"
+license = "Unlicense/MIT"
 
 [lib]
 name = "tabwriter"

LICENSE-MIT

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Andrew Gallant
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -1,11 +1,11 @@
 tabwriter is a crate that implements
-[elastic tabstops](http://nickgravgaard.com/elastictabstops/index.html). It 
-provides both a library for wrapping Rust `Writer`s and a small program that 
+[elastic tabstops](http://nickgravgaard.com/elastictabstops/index.html). It
+provides both a library for wrapping Rust `Writer`s and a small program that
 exposes the same functionality at the command line.
 
 [![Build status](https://api.travis-ci.org/BurntSushi/tabwriter.png)](https://travis-ci.org/BurntSushi/tabwriter)
 
-Licensed under the [UNLICENSE](http://unlicense.org).
+Dual-licensed under MIT or the [UNLICENSE](http://unlicense.org).
 
 
 ### Simple example of library
@@ -66,7 +66,7 @@ The API is fully documented with some examples:
 ### Installation
 
 This crate works with Cargo. Assuming you have Rust and
-[Cargo](http://crates.io/) installed, simply check out the source and run 
+[Cargo](http://crates.io/) installed, simply check out the source and run
 tests:
 
 ```bash