Added save.py. A class that saves change point information; i.e., sampled superstate indices and durations.
Added save.py. A class that saves change point information; i.e.,
sampled superstate indices and durations.

mattjj/pyhsmm,fivejjs/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm,mattjj/pyhsmm,wgmueller1/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm,wgmueller1/pyhsmm,bikash/pyhsmm,theDataGeek/pyhsmm,theDataGeek/pyhsmm,wgmueller1/pyhsmm,wgmueller1/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm,fivejjs/pyhsmm,bikash/pyhsmm,wgmueller1/pyhsmm,bikash/pyhsmm