Fixed link to the travis page for the travis badge & added doc reference badge.
Fixed link to the travis page for the travis badge & added doc reference badge.

GangWang/termui,creack/termui,gizak/termui,witcxc/termui,gizak/termui,justinyaoqi/termui,trigrass2/termui,lukaszraczylo/termui,wallyqs/termui,Alienero/termui