Update README and flow
Implement changes from Anna Charisi
Change <geographicExtent> according to Anna Charizis suggestions
Update TODO
Merge branch 'master' of github.com:GFZ/isdc-espas-converter

* 'master' of github.com:GFZ/isdc-espas-converter:
  Code for default values for paths now longer to be compat. to Ruby < 2.0; Print current archive
Change <ESPAS_Result><name> from tar.gz to source file name