Added missing pointer dereference. Fixes #22.
Only show the preview window if the selected completion is an imageNamed completion. Prevents the preview window from momentarily appearing if a non-image completion matches an image name.
Changed copyright string to something that's not the default project template.
Don't load or swizzle if encountering an unsupported version of Xcode.
Fixes crashes on Xcode 5 so you can keep this installed if you're switching between 4 and 5.
Don't show load warning if mainBundle isn't Xcode.