Update README

Author: Martin Prout

README

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+  ___                                  _           
+ | _ \_  _ _ __ _ _ ___ __ ___ ___ ___(_)_ _  __ _ 
+ |  _/ || | '_ \ '_/ _ | _/ -_|_-<(_-<| | ' \/ _` |
+ |_|  \_, | .__/_| \___|__\___/__//__/|_|_||_\__, |
+      |__/|_|                                |___/ 
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+  ___                   _               _      
+ | __|__ ___ __ ___ _ _(_)_ __  ___ _ _| |_ ___
+ | _| \ \ / '_ | -_) '_| | '  \/ -_) ' \  _(_-<
+ |___|/_\_\ .__|___|_| |_|_|_|_\___|_||_\__/__/
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+Mainly pyprocessing experiments / some python to povray scripts