Minify cleancss-browser.js.
Minify cleancss-browser.js.

See https://github.com/GoalSmashers/clean-css/pull/262/

kangax/html-minifier,bryanerayner/html-minifier,AshKyd/html-minifier,GerHobbelt/html-minifier,GerHobbelt/html-minifier,kangax/html-lint,MacManus/html-minifier,AshKyd/html-minifier,psychoss/html-minifier,DChristiany/html-minifier,kangax/html-lint,HossainKhademian/HtmlMinifier,bryanerayner/html-minifier,DChristiany/html-minifier,MacManus/html-minifier,kangax/html-minifier,jonnochoo/html-minifier,psychoss/html-minifier,jonnochoo/html-minifier