Words With Friends adds SMS game invites and notification improvements

One of the most popular cross-platform word games in the mobile world, Words With Friends, has received an update tonight with a few good parts to it. First off is an interesting (and we doubt very useful) feature that lets you invite friends to games via SMS messages. Zynga also lists improvements to the notification system -- something that has been pretty hit or miss for many users. Unfortunately the notification sticks with a pretty unsightly gray/white striped background, but that's just ho...