FIX: Removed last item ("authority") from RADOLAN WTK string in create_osr.
FIX: Removed last item ("authority") from RADOLAN WTK string in create_osr.

This addresses issue #70. The item 'AUTHORITY["EPSG","1000001"]' should read
'AUTHORITY["USER","1000001"]'. However, it should rather be removed in order
to avoid conflicts with other user-defined CRS IDs.

wradlib/wradlib,wradlib/wradlib,kmuehlbauer/wradlib,heistermann/wradlib,kmuehlbauer/wradlib,heistermann/wradlib