By Mike McEnaney | for Technology Tell Google’s play in the tablet market is the Nexus 7, a 7-inch screen Android tablet clearly built for on-the-go use; once you play with this one for awhile, you’ll also see it was truly designed around—and for—Google Play. While little headway has been made with regard to challengers of Apple’s iPad, we have to say the Nexus 7 may prove one of the more a formidable opponents as the tablet wars roll along. First off, just to be upfront, an iPad feature the Nexus 7 doesn’t have: no rear camera. And the screen resolution, while...