git clone下代碼之后會有一個.gitignore文件极阅，一般是隱藏的胃碾，需設(shè)置顯示隱藏文件
打開.gitignore文件，將下面代碼拷貝到文件內(nèi)（下面的cowork/...改成你自己的工程）：
*.xcuserstate
Pods/
Podfile.lock
cowork/cowork.xcworkspace/contents.xcworkspacedata
cowork/cowork.xcworkspace/xcuserdata/duanjiahuan.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
*.xcworkspace
cowork/cowork.xcodeproj/project.xcworkspace/xcuserdata/duanjiahuan.xcuserdatad/UserInterfaceState.xcuserstate
xcuserdata
.idea
