Added a .gitignore file to surpress the .so, .o, .pyc, and .dat files.
Major overhaul of the rtl_osv21 software.  This added in logging to an sqlite3 database, a set of utilities for unit conversions, a fixed barometric pressure decoder, and much more.  rtl_osv21.py still needs to be updated.
Moved rtl_osv21.py over to the new scheme.  Added the WUnderground PWS uploader to the utils.py module.
Several bug fixes to the last commit.  I think this might actually be working as intended now.
Looks like there were a few more bugs in the uploader.
Looks like I forgot to convert the dew point into Fahrenheit.