Update README for changes.
Update README for changes.

frewsxcv/travis-cargo,frewsxcv/travis-cargo,kbknapp/travis-cargo,ceph3us/travis-cargo,alexcrichton/travis-cargo,kbknapp/travis-cargo,alexcrichton/travis-cargo,badboy/travis-cargo,badboy/travis-cargo,alexcrichton/travis-cargo,badboy/travis-cargo,huonw/travis-cargo,frewsxcv/travis-cargo,erickt/travis-cargo,bluss/travis-cargo,bluss/travis-cargo,ceph3us/travis-cargo,vberger/travis-cargo,huonw/travis-cargo,huonw/travis-cargo,kbknapp/travis-cargo,erickt/travis-cargo,erickt/travis-cargo,ceph3us/travis-cargo,bluss/travis-cargo,vberger/travis-cargo,vberger/travis-cargo