add some events and fixed bugs

• fixed orientationchange event
• add parameter like isVerticle & isLooping & isAutoplay
• add those event onslide & onslidechange & onslidestart & onslideend

MSlider-0.9-beta

• Keep li elements in 3
• Add damping effect when meeting the edge of the list
• handle onorientationchange Event
• Add layer slider not just pic slider