docs(buttons): add boolean badge
docs(buttons): add boolean badge

mabi/bootstrap,BookingBug/bootstrap,christor/bootstrap,Servoy/bootstrap,fpipita/bootstrap,burlhock/bootstrap,icfantv/bootstrap,byronigoe/bootstrap,Foxandxss/bootstrap,wesleycho/bootstrap,vfiles/bootstrap,infowrap/bootstrap,Kpler/bootstrap,caoruiy/bootstrap,christor/bootstrap,Foxandxss/bootstrap,angular-ui/bootstrap,fpipita/bootstrap,wesleycho/bootstrap,caoruiy/bootstrap,Servoy/bootstrap,benhalverson/bootstrap,vfiles/bootstrap,byronigoe/bootstrap,shootermv/bootstrap,benhalverson/bootstrap,looker/bootstrap,292388900/bootstrap,mabi/bootstrap,looker/bootstrap,BookingBug/bootstrap,deeg/bootstrap,RobJacobs/bootstrap,RobJacobs/bootstrap,benhalverson/bootstrap,Kpler/bootstrap,deeg/bootstrap,292388900/bootstrap,icfantv/bootstrap,shootermv/bootstrap,benhalverson/bootstrap,burlhock/bootstrap,infowrap/bootstrap,angular-ui/bootstrap