Try the awesome AllTargets Xcode by poboke plugin available on Github (works with Xcode 5+).

Manual assembly and installation
- Download the source code and open AllTargets.xcodeproj with Xcode.
- Select "Edit Scheme" and set "Build Configuration" to "Release"
- Build it. It automatically installs the plugin in the correct directory.
- Restart Xcode. (Make sure the Xcode process is complete)
Manual removal
Delete the following directory:
$HOME/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins/AllTargets.xcplugin
↳ A tutorial on how the plugin was created (Chinese).
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