Bumping peer dependency to support React 0.14.0-beta1.
Bumping peer dependency to support React 0.14.0-beta1.

HorizonXP/react-helmet,bountylabs/react-helmet,romanonthego/react-helmet,miraks/react-helmet,cesarandreu/react-helmet,kib357/react-helmet,nfl/react-helmet,magus/react-helmet,gaearon/react-helmet