Add build status widget to readme
Add build status widget to readme

chad-autry/hex-grid-map,chad-autry/hex-grid-map-3D,chad-autry/hex-widget,chad-autry/hex-grid-map,chad-autry/hex-grid-map,chad-autry/hex-grid-map-3D,chad-autry/hex-grid-map-3D,chad-autry/hex-widget,chad-autry/hex-widget