Re-license under MIT, as discussed under issue #6.

Author: IMSoP

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2012 onwards, Rowan Collins and contributors
+
+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.markdown

@@ -38,4 +38,5 @@ Who?
 
 This project was originated by Rowan Collins, AKA IMSoP. My homepage is at <http://rwec.co.uk>, and you can reach me by e-mail on the obvious addresses @ that domain.
 
-The code here is free to use for any purpose whatsoever, but with a polite request that you treat it like Free Software, and a strong request that you don't pass it off as your own. I'm happy for you to take it away, improve it, use it for whatever you like, but I'd like you to credit me as the originator. I'd also be more than happy to hear what you do with it, and how you've improved on it.
+The code is licensed under the MIT license, which means you can pretty much do what you like with it, other than claim you wrote it yourself. I'm happy for you to take it away, improve it, and use it for whatever you like, but
+I'd love to hear what you do with it, and how you've improved on it.

composer.json

@@ -1,6 +1,7 @@
 {
 	"name": "imsop/simplexml_debug",
 	"description": "Tools for debugging your code when working with PHP's SimpleXML functions.",
+	"license": "MIT",
 	"authors": [{
 		"name": "Rowan Collins",
 		"homepage": "http://rwec.co.uk",