updated sound and music handling
Added endgame menu prefab, removed GA tracker from projectile
Added animation controller for HUD, animated obstacle from right
Added credits.unity scene
Updated handling for main menu buttons
Merge branch 'production' into development
Added end game scene
Fixed bugs in the music instantiation
Merge branch 'production' into development
Various hotfixes to provide functionality for submission
Added animation triggers to button presses
Added game analytics placeholder events
Added touch animation to Play button
Added time delay to button touch, marked up for touch enable/disable requirements
Fixed performance issues caused by projectiles not being deleted
Added all remaining button animations and time delays.
Imported Chartboost package
Merge branch 'art' into development
Merge branch 'production' into development
Merge branch 'fixes' into development