--- /dev/null
+zlib License Copyright (c) <year> <copyright holders>
+
+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.