====================================================================      
 PARALLAX CLASS
====================================================================

 Version: 0.8
 Made by Griffin Adams ( theIdeaMen ) 2011-2012
 Twitter: http://www.twitter.com/theIdeaMen
 eMail: duff333@gmail.com

  MIT License
 You can use and change this code free of purgery or death as long
  as you promise to have fun or something along those lines.

 Thanks to Brent Sorrentino for a great parallax demo, the
  the starting point from witch this class was born.

 Feedback welcome!

====================================================================        
 CHANGES
====================================================================

 03-02-2015 - Tim Catania   - Replaced depreciated setReferencePoint
 02-05-2012 - Griffin Adams - Major update/rewrite
                            - see 'Old' branch for previous history

====================================================================
 INFORMATION
====================================================================


 * Import the class like this:

   parallax = require( "parallax" )


 * To create a new scene

   yourScene = parallax.newScene(
		{
			width = [X SCENE SIZE],
			height = [Y SCENE SIZE],
			left = [SCENE X BEGINNING POS],
			top = [SCENE Y BEGINNING POS],
			[repeated = [REPEAT FOREVER, "horizontal","vertical","both"]
		} )


 * To add a new layer to the scene

   yourScene:newLayer(
		{
			image = [IMAGE NAME],
			width = [IMAGE WIDTH],
			height = [IMAGE HEIGHT],
			[top = [IMAGE Y POS],]
            [bottom = [IMAGE Y POS],]
			left = [IMAGE X POS],
			speed = [HOW FAST, 0 - 1 for backgrounds, > 1 for foregrounds],
			[repeated = [INF SCROLL, "horizontal","vertical","both"]]
		} )

 NOTE: Create your layers in order from closest to farthest away
 NOTE: All x/y coordinates should be in relation to the screen (not local)


 * To add objects to a layer

   yourScene:insertObj( object, [layer] )

 NOTE: If no layer specified, defaults to the top layer
 


 * To move a scene

   yourScene:move( deltaX, deltaY )

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