Minor bug fixes.

Minor bug fixes.

Added an auto-play button so that you can watch a fireworks show without having to tap the screen.
Added heart and star shaped fireworks.
Made the scene selection buttons easier to see.

Minor bug fixes.

- More types of fireworks!  Now there are over a dozen kinds of fireworks!
- Added 6 different backgrounds to choose from including solid black!
- Updated graphics for all fireworks

- Fixed compatibility issue with iOS 9
- Other bug fixes

Added support for 64 bit