Adding XMOS software license agreement

LICENSE.txt

@@ -0,0 +1,27 @@
+Software License Agreement
+
+Copyright (c) 2011, XMOS Ltd., All rights reserved.
+
+The copyright holders hereby grant to any person obtaining a copy of this software (the "Software") and/or its associated 
+documentation files (the Documentation), the perpetual, irrevocable (except in the case of breach of this license) no-cost, 
+royalty free, sublicensable rights to use, copy, modify, merge, publish, display, publicly perform, distribute, and/or 
+sell copies of the Software and the Documentation, together or separately, and to permit persons to whom the Software and/or 
+Documentation is furnished to do so, subject to the following conditions:
+
+. Redistributions of the Software in source code must retain the above copyright notice, this list of conditions and the 
+following disclaimers.
+
+. Redistributions of the Software in binary form must reproduce the above copyright notice, this list of conditions and 
+the following disclaimers in the documentation and/or other materials provided with the distribution.
+
+. Redistributions of the Documentation must retain the above copyright notice, this list of conditions and the following 
+disclaimers.
+
+Neither the name of XMOS, nor the names of its contributors may be used to endorse or promote products derived from this 
+Software or the Documentation without specific prior written permission of the copyright holder.
+
+THE SOFTWARE AND DOCUMENTATION ARE 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 
+CONTRIBUTORS 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 DOCUMENTATION OR THE USE OF OR OTHER 
+DEALINGS WITH THE SOFTWARE OR DOCUMENTATION.