EPUB3 subproject changed location. Updated the xcodeproject and workspace data file to point to the new location.
Merge branch 'develop' of https://github.com/readium/SDKLauncher-OSX into develop
Merge branch 'develop' of https://github.com/readium/SDKLauncher-OSX into develop

Conflicts:
	LauncherOSX.xcworkspace/contents.xcworkspacedata
Added source icons, icns file created from those with iconutil and the modified project files with the icon info.
Merge branch 'develop' of https://github.com/readium/SDKLauncher-OSX into develop