Add "Pending Deprecation" notice to README
Add "Pending Deprecation" notice to README

moxiegirl/boot2docker-cli,boot2docker/boot2docker-cli,beni55/boot2docker-cli,SvenDowideit/boot2docker-cli,mattrobenolt/boot2docker-cli,beni55/boot2docker-cli,moxiegirl/boot2docker-cli,mattrobenolt/boot2docker-cli,SvenDowideit/boot2docker-cli,boot2docker/boot2docker-cli