./adda.py cutpart doesn't work

[tbaumann]

Adding a cutpart doesn't work.

[tilmanb@zuse-mini-tilman-baumann-name scripts]$ ./adda.py cutpart RightPlate RightPlate
Creating cutpart
Traceback (most recent call last):
  File "./adda.py", line 101, in <module>
    adda(sys.argv[1], sys.argv[2], sys.argv[3] )
  File "./adda.py", line 73, in adda
    with open(outFile,'w') as o:
IOError: [Errno 2] No such file or directory: ''

The same works just fine for printed parts

[tilmanb@zuse-mini-tilman-baumann-name scripts]$ ./adda.py printedpart RightPlate RightPlate
Creating printedpart

[tbaumann]

ah, fixed in #2