removed obsolete "basic" iframe loader override (now default in readium-shared-js)
removed obsolete "basic" iframe loader override (now default in readium-shared-js)

readium/SDKLauncher-OSX,readium/SDKLauncher-OSX,readium/SDKLauncher-OSX,readium/SDKLauncher-OSX,readium/SDKLauncher-OSX