* Made example to initiate simulation without user interaction
- Removed code that pertained to UI checkbox.
- Added BMNGOneImageLayer to avoid seeing the atmosphere without an
Earth when the application is loading.
- Removed factor from the time advancement simulation
* Change animation mechanism to the standard requestAnimationFrame
* Changed the animation mechanism to account for different framerates
* Moved requestAnimationFrame to the beginning
* Changed StarField example name to fit its new focus
* Changed example name
* Removed ability to control animation to simplify example
* Changed example name to Night Sky Animation
* Deleted Sun Simulation example
- Deleted unused configuration files and created a new one to fit the
new name of the example.
* Adjustments to @Beak-man's new night sky animation example
* Improved some comments
* Repositioned comment that refers to the animation
