Update react & react-* dependencies, add new prop-types dependency.
Update react & react-* dependencies, add new prop-types dependency.

Latest React version introduced a new dependency for prop-types as
mentioned in https://facebook.github.io/react/blog/2017/04/07/react-v15.5.0.html#migrating-from-react.proptypes.

threepointone/glamor,threepointone/glamor