Update beta.1.6

-‘navigation’ option name change to ‘navi’
-changed init class swapping
-loop activate with same items on screen
-changed item/stage width calculation. Now its up to 3 decimal places
-moved watchVisibility to bottom of refresh
-hopefully fix IE click handling
-fixed video play click handling
-removed draggable property
-added new option - ‘navRewin’  default true
-fixed watchVisibility function
-added second parameter (main el reference) to info callback
-frontpage demo won’t show if browser doesn’t support perspective
property
-added cursor default to disabled class
-fixed some demos
Merge branch 'Update-1.6'