吓我一跳，Xcodo居然占用了我 100G 的磁盘空间～
Derived Data
Go to ~/Library/Developer/Xcode/DerivedData/
iOS Device Support
Go to ~/Library/Developer/Xcode/iOS DeviceSupport/
Archives (Organizer)
Go to ~/Library/Developer/Xcode/Archives/
Simulators
Go to ~/Library/Developer/CoreSimulator/Devices
Go to ~/Library/Application Support/iPhone Simulator/
Documentation
Go to ~/Library/Developer/Shared/Documentation/DocSets
