Added Apache 2.0 license header and also SPDX idenfitier

Author: screamerbg

mbed/mbed.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python
+
+# Copyright (c) 2016 ARM Limited, All Rights Reserved
+# SPDX-License-Identifier: Apache-2.0
+
+# Licensed under the Apache License, Version 2.0 (the "License"); 
+# you may not use this file except in compliance with the License.
+
+# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software 
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+# either express or implied.
+
+
 # pylint: disable=too-many-arguments, too-many-locals, too-many-branches, too-many-lines, line-too-long, too-many-nested-blocks, too-many-public-methods, too-many-instance-attributes
 # pylint: disable=invalid-name, missing-docstring