xcode5 ios7升级后的一系列问题解决

framework not found IOKit
解决办法，打开终端：
cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/IOKit.framework
sudo ln -s Versions/A/IOKit .