Add readme

README.md

+[NOMAD Laboratory CoE](http://nomad-coe.eu) parser for [Molcas](http://www.flapw.de/pm/)
+
+The original of this repository lives at https://gitlab.rzg.mpg.de/nomad-lab/parser-molcas
+but probably you want to clone recursively https://gitlab.rzg.mpg.de/nomad-lab/nomad-lab-base
+to get all dependencies.
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