updating travis badge in README
updating travis badge in README

chef-cookbooks/etcd,chef-brigade/etcd-cookbook,someara/etcd-cookbook,ilackarms/etcd,spheromak/etcd-cookbook,ilackarms/etcd,someara/etcd-cookbook,spheromak/etcd-cookbook,spheromak/etcd-cookbook,chef-brigade/etcd-cookbook,someara/etcd-cookbook,chef-cookbooks/etcd,chef-brigade/etcd-cookbook,chef-cookbooks/etcd