Add copyright headers to all the files
diff --git a/cr2/plot_utils.py b/cr2/plot_utils.py
index a939897..9e0c517 100644
--- a/cr2/plot_utils.py
+++ b/cr2/plot_utils.py
@@ -1,4 +1,18 @@
#!/usr/bin/python
+# $Copyright:
+# ----------------------------------------------------------------
+# This confidential and proprietary software may be used only as
+# authorised by a licensing agreement from ARM Limited
+# (C) COPYRIGHT 2015 ARM Limited
+# ALL RIGHTS RESERVED
+# The entire notice above must be reproduced on all authorised
+# copies and copies may only be made to the extent permitted
+# by a licensing agreement from ARM Limited.
+# ----------------------------------------------------------------
+# File: plot_utils.py
+# ----------------------------------------------------------------
+# $
+#
"""Small functions to help with plots"""
from matplotlib import pyplot as plt