Add Settings.bundle containing acknowledgements if CocoaPods enable

Add Settings.bundle which contains CocoaPods 'Acknowledgements' section (updated on every `pod install`) as well as an entry containing the version & build number (updated on each build).
This confused me for a bit. If we need this method to be public, maybe we should just make it public and move the template contents stuff into the shell script build phase. This class is literally my least favorite part of the entire project, so maybe it's worth performing a larger-scale refactor.