Updated readme with usesRoundedArrow and dimsBackgroundViewsTintColor
Updated readme with usesRoundedArrow and dimsBackgroundViewsTintColor

pinkowitz/WYPopoverController,sammcewan/WYPopoverController,Mindera/WYPopoverController,orta/WYPopoverController,thelearningclinic/WYPopoverController,vitalys/WYPopoverController,iv-mexx/WYPopoverController,Medium/WYPopoverController,jiamaozheng/WYPopoverController,Voxer/WYPopoverController