Add copyright and licensing information

Added copyright notice and license information to the file.

Author: njacazio

Detectors/Upgrades/ALICE3/IOTOF/macros/defineIOTOFGeo.C

@@ -1,3 +1,15 @@
+# Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+# See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+# All rights not expressly granted are reserved.
+#
+# This software is distributed under the terms of the GNU General Public
+# License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+#
+# In applying this license CERN does not waive the privileges and immunities
+# granted to it by virtue of its status as an Intergovernmental Organization
+# or submit itself to any jurisdiction.
+
+
 #include <TCanvas.h>
 #include <TGraph.h>
 #include <TArc.h>
@@ -125,4 +137,4 @@ void defineIOTOFGeo(const double rAvg = 21,              // cm, average radius o
   tex->DrawLatex(0.12, 0.80, Form("Inscribed Radius = %.2f", rInscribed));
   tex->SetTextColor(kRed);
   tex->DrawLatex(0.12, 0.76, Form("Outscribed Radius = %.2f", rOutscribed));
-}
+}