Hey all!
Xcode 7 was just released, along with this awesome tidbit of news:
Now you can go beyond the simulator to test your app on an iPad, iPhone, or Apple Watch — for free. Simply enter your Apple ID into the Accounts preference pane, then attach a device to your Mac using a Lightning cable. You can use the same Apple ID you already use for iCloud, iTunes, or the App Store, or create a new one.