Reorganization to fit best practices
Adding in the new reorganized classes

- Renamed main script to sms_tools.py
- working android_db.py with tests
- moving to using in-memory initial databases
   populated by sql files
Work on the main script, sms_tools.py

- functional but not done csv/tabular
- named xml xmlmms to avoid namespace error
Add json format in/out, tests, update tests
Now writes to new android db, cleaning sms_tools.py
Update readme
Merge pull request #8 from t413/sms_tools

Merging sms_tools branch, more modular & general purpose cool