Fixed typo in README.
Fixed typo in README.

rxfork/jekyll-and-zurb,matthiasbeyer/wiki.template,matthiasbeyer/wiki.template,matthiasbeyer/wiki.template,razor-x/jekyll-and-zurb,serixscorpio/serixscorpio.github.io,razor-x/jekyll-and-zurb,razor-x/jekyll-and-zurb,rxfork/jekyll-and-zurb