Fixed bug where database table name was hard-coded instead of using the $wpdb properties.

Also verified that this didn't occur anywhere else in the whole application.
Merge pull request #85 from jrfnl/master

Various small fixes/enhancements/changes
Merge branch 'master' of git://github.com/jdevalk/wordpress-seo into Bugfix-database-table-names

Conflicts:
	readme.txt