FMOD, iOS, Android

Removed all old music files.
Implemented FMOD files and corrected code.
Removed play game services for iOS.
Fixed issues with android manifest to allow android builds.
Adjusted variables in relation to FMOD triggers and fades.
Player Settings

Changed version number to 5/0.2.1
Nathaniel's shenanigans
Scene changes for difficulty and FMOD
Merge branch 'nathanielDesign' into development