Add section about the Sublime PR to README
Add section about the Sublime PR to README

cc @garetmckinley

oscar-b/styled-components,css-components/styled-components,styled-components/styled-components,styled-components/styled-components,JamieDixon/styled-components,oscar-b/styled-components,JamieDixon/styled-components,styled-components/styled-components,JamieDixon/styled-components