update readme

README.md

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 ![CMS.js Logo](https://raw.githubusercontent.com/cdmedia/cms.js/gh-pages/img/logo-md.png)
 
-CMS.js is fully client-side, pure Javascript static site generator in the spirit of [Jekyll](https://github.com/jekyll/jekyll)
+CMS.js is fully client-side, Javascript site generator in the spirit of [Jekyll](https://github.com/jekyll/jekyll)
 that uses plain ol' HTML, CSS and Javascript to generate your website. CMS.js is like a file-based CMS.
 It takes your content, renders Markdown and delivers a complete website in Single-Page
 App fashion...without the aid of server-side scripting (no Node.js, PHP, Ruby, etc.).