File list (Check if you may need any files):
KeyboardExtension
.................\.DS_Store
__MACOSX
........\KeyboardExtension
........\.................\._.DS_Store
KeyboardExtension\Classes
.................\.......\DemoViewController.h
__MACOSX\KeyboardExtension\Classes
........\.................\.......\._DemoViewController.h
KeyboardExtension\Classes\DemoViewController.m
__MACOSX\KeyboardExtension\Classes\._DemoViewController.m
KeyboardExtension\Classes\KeyboardExtensionAppDelegate.h
__MACOSX\KeyboardExtension\Classes\._KeyboardExtensionAppDelegate.h
KeyboardExtension\Classes\KeyboardExtensionAppDelegate.m
__MACOSX\KeyboardExtension\Classes\._KeyboardExtensionAppDelegate.m
KeyboardExtension\DoneDown.png
__MACOSX\KeyboardExtension\._DoneDown.png
KeyboardExtension\DoneUp.png
__MACOSX\KeyboardExtension\._DoneUp.png
KeyboardExtension\Icon.png
__MACOSX\KeyboardExtension\._Icon.png
KeyboardExtension\Info.plist
__MACOSX\KeyboardExtension\._Info.plist
KeyboardExtension\KeyboardExtension.xcodeproj
.................\...........................\lsc.mode1v3
.................\...........................\lsc.pbxuser
.................\...........................\project.pbxproj
.................\KeyboardExtension_Prefix.pch
.................\main.m
__MACOSX\KeyboardExtension\._main.m
KeyboardExtension\MainWindow.xib