adding readme

README.md

+[NOMAD Laboratory CoE](http://nomad-lab.eu/) parser for [CPMD](http://www.cpmd.org)
+
+The original lives at https://gitlab.rzg.mpg.de/nomad-lab/parser-cpmd
+This depends on python common, and nomad-meta-info, you most likely want to
+get [nomad-lab-base](https://gitlab.rzg.mpg.de/nomad-lab/nomad-lab-base) that
+contains it along with all dependencies.
\ No newline at end of file