Upgrade to 2.0.6 and the SSTableWriter handles null values now. Huzzah.
Upgrade java-driver while we're at it.
Merge pull request #29 from Pardot/dvk/upgrade-sstablewriter-cass-version

Upgrade to 2.0.6 and the SSTableWriter handles null values now. Huzzah.
Merge pull request #30 from Pardot/bigdata-happyland

Sending 2.0.6 upgrade to master