Add license file and license header to source files.

libs/numpy/example/ufunc.cpp

@@ -1,3 +1,8 @@
+// Copyright Ankit Daftery 2011-2012.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
 /**
  *  @brief An example to demonstrate use of universal functions or ufuncs
  *