Add NOTICE

Change-Id: Ibf3491f50685d4a9b8ed1ff7882931544fcd538c
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..85a6a36
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,18 @@
+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.