swift练练
swift playgroud
添加USBsocket类库
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vcTovc
Merge branch 'swift'

Conflicts:
	GoAppTest.xcodeproj/project.pbxproj
	GoAppTest.xcodeproj/project.xcworkspace/xcshareddata/GoAppTest.xccheckout
	GoAppTest.xcodeproj/project.xcworkspace/xcuserdata/admin.xcuserdatad/UserInterfaceState.xcuserstate
	GoAppTest.xcodeproj/xcuserdata/admin.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
	GoAppTest/Base.lproj/Main.storyboard
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//手动执行backToMain的Segue
        [self performSegueWithIdentifier:@"backToMain" sender:self];
IOS传值总结