allow positioning relative to previous step
Added blackout and whiteout
Added css options for all browser types
Added fullscreen function, currently only working with Chrome (maybe Safari but not Firefox)
moved background style to impress_wrapper
Allow keyboard input in fullscreen mode for Chrome
Allow Exit fullscreen to 'f' key
added missing toogle of inFullscreen
added impress:starttransition
Merge branch 'starttransition'
added steps to impress:init event details
added steps to impress:init event details
Merge branch 'stepsInInit'
merged relative positioning
fixed relative placement
Conflict fix in demo css