Engadget writes, Within the past few weeks alone, we've spotted the cautious hands of the folks over at iFixit dive very carefully into that Retina-friendly MacBook Pro, the other MBP and, naturally, Apple's ultrathin MacBook Air. Oh, and how could we forget Google's newest slate, the Jelly Bean-loaded Nexus 7. Luckily for you, if you're a die-hard fan of all those fancy teardowns and guides, now you'll have an easier place to browse your way through them in their entirety; thanks to the site's recently launched Android application. Even better, however, the app's an open source one, allowing users to tinker...