Added Copyright Notice

COPYRIGHT

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+DanIDL-Lite:
+------------
+
+General scientific programs for IDL with a focus on astronomy and image
+processing (http://www.danidl.co.uk)
+
+Copyright (C) 2018 - Daniel Bramich
+
+These programs are free software: you can redistribute them and/or modify
+them under the terms of the GNU General Public License as published by the
+Free Software Foundation, either version 3 of the License, or (at your
+option) any later version.
+
+These programs are distributed in the hope that they will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with these programs.  If not, see <http://www.gnu.org/licenses/>.
+
+If any of these programs are used for any published research/work, then
+the addition of the following sentence in the acknowledgements, or other
+appropriate place, is required:
+
+"This research/work has made use of the DanIDL library of routines
+(http://www.danidl.co.uk)"
+
+------------------------------------------------------------------------
+
+Daniel Bramich (dan.bramich@hotmail.co.uk)