What is the proper way to trigger appium on iphone6 and iphone 6+

I am on the ios8 branch and was able to trigger appium with no problems on iphone 5s simulator with 7.1 sdk from xcode 6.

I am trying invoke the 6 and 6+ simulator. How do I do that? Is it the capabilities hash? Is below correct?

deviceName: ‘iPhone Simulator’,
platformName: ‘iOS’,
platformVersion: ‘8.0’,

Appium seems to be figuring it out but I want to pass the right arguments

nfo: [debug] Getting device string from opts: {“forceIphone”:false,“forceIpad”:false,“xcodeVersion”:“6.0.1”,“iOSSDKVersion”:“8.0”,“deviceName”:“iPhone Simulator”,“platformVersion”:“8.0”}
info: [debug] fixDevice is on
info: [debug] Fixing device. Changed from: “iPhone Simulator (8.0 Simulator)” to: “iPhone 6 (8.0 Simulator)”
info: [debug] Final device string is: ‘iPhone 6 (8.0 Simulator)’
info: [debug] We’re on iOS7.1+ so forcing defaultDevice on
info: [debug] Getting device string from opts: {“forceIphone”:false,“forceIpad”:false,“xcodeVersion”:“6.0.1”,“iOSSDKVersion”:“8.0”,“deviceName”:“iPhone Simulator”,“platformVersion”:“8.0”}
info: [debug] fixDevice is on
info: [debug] Fixing device. Changed from: “iPhone Simulator (8.0 Simulator)” to: “iPhone 6 (8.0 Simulator)”
info: [debug] Final device string is: ‘iPhone 6 (8.0 Simulator)’
info: [debug] Parsed app Info.plist (as binary)
info: [debug] Wrote new app Info.plist with device type