Build settings from command line:
    TOOLCHAINS = com.apple.dt.toolchain.XcodeDefault

Build settings for action clean and target app:
    ACTION = clean
    SUPPORTED_DEVICE_FAMILIES = 1,2
    SUPPORTED_PLATFORMS = iphonesimulator iphoneos
    variant = normal

Build settings for action clean and target appTest:
    ACTION = clean'
    SUPPORTED_DEVICE_FAMILIES = 1,2
    SUPPORTED_PLATFORMS = iphonesimulator iphoneos
    variant = normal

