pin base SDK at 6.1 instead of using latest SDK
pin base SDK at 6.1 instead of using latest SDK

in Xcode 5 the „latest SDK“ would select base SDK 7.0, but we don’t
support that yet

puremourning/littlego,herzbube/littlego,herzbube/littlego,herzbube/littlego,puremourning/littlego,puremourning/littlego,herzbube/littlego,herzbube/littlego,puremourning/littlego