Merged in quixadhal/pyrom (pull request #45)

Added JSON serialization to the Bit() class. Example usage in the comments.  Also, minor bugfix for empty bit objects.
Cosmetic change.  Added a BOOT custom log level, just above INFO.  We can add more later as we refine our logging techniques.
Merge branch 'master' of https://bitbucket.org/mudbytes/pyom