Merge pull request #1 from mct/master

Initial commit of the OPC server, for use on Pier 14
Merge pull request #2 from mct/master

Initial commit of soma_led_test.py
Document character constants
Add CAD models from Ruza

Notes from Ruza:

    - The *.wire file is an Alias Design file, possibly convertible
      to a standard CAD format, thought she hasn't had luck with it.

    - The *.dwg file is for the for the Soma *model*  -- it is made
      off the model, not sculpture.

-mct
Add cad/README.txt
Update README.txt
Update README.txt