Added source string
Added CSAS and NITWAL modules

Added strings from CSAS and NITWAL modules
Minor updates
Workign on writing xsdrn module
Initial Python XSDRN Model Testing

Testing the initial XSDRN model as implemented in python
Added runModel (buggy)`

Added a run model, that might have a bug
Working RunModel

Working runModel.  The previous error was having the submission inside
the with open case, as it didn't have to write.