with license

git-svn-id: https://www2.in.tum.de/repos/cup2/trunk@682 d589027d-755a-0410-9880-dfa23dcf37b0

license.txt

+The zlib/libpng License
+
+Copyright (c) 2014 Andreas Wenger, Michael Petter
+
+This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source distribution.
+