adding HardonCollider lib (not used yet)

includes/LICENSE.txt

@@ -0,0 +1,34 @@
+This project is right this moment released under the MIT License,
+though this may change in the future.
+
+Additionally, middleclass and HardonCollider are used by this project.
+Both of these libraries are released under the MIT License.
+
+middleclass is copyright (c) 2011 Enrique Garc<72>a Cota and can be obtained at
+ https://github.com/kikito/middleclass
+HardonCollider is copyright (c) 2010-2011 Matthias Richter and can be obtained at
+ https://github.com/vrld/HardonCollider
+
+The full text of the MIT License (with copyright statement for this project):
+
+The MIT License (MIT)
+
+Copyright (c) 2015 Paul Liverman III
+
+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.