Merge pull request #11929 from twbs/maintainers

mention core team maintenance & community contributors

README.md

 # [Bootstrap](http://getbootstrap.com) [![Build Status](https://secure.travis-ci.org/twbs/bootstrap.png)](http://travis-ci.org/twbs/bootstrap) [![devDependency Status](https://david-dm.org/twbs/bootstrap/dev-status.png)](https://david-dm.org/twbs/bootstrap#info=devDependencies)
 [![Selenium Test Status](https://saucelabs.com/browser-matrix/bootstrap.svg)](https://saucelabs.com/u/bootstrap)
 
-Bootstrap is a sleek, intuitive, and powerful front-end framework for faster and easier web development, created and maintained by [Mark Otto](http://twitter.com/mdo) and [Jacob Thornton](http://twitter.com/fat).
+Bootstrap is a sleek, intuitive, and powerful front-end framework for faster and easier web development, created by [Mark Otto](http://twitter.com/mdo) and [Jacob Thornton](http://twitter.com/fat), and maintained by the [core team](https://github.com/twbs?tab=members) with the massive support and involvement of the community.
 
 To get started, check out <http://getbootstrap.com>!
 

_layouts/default.html

@@ -57,6 +57,7 @@
         {% include social-buttons.html %}
 
         <p>Designed and built with all the love in the world by <a href="http://twitter.com/mdo" target="_blank">@mdo</a> and <a href="http://twitter.com/fat" target="_blank">@fat</a>.</p>
+        <p>Maintained by the <a href="https://github.com/twbs?tab=members">core team</a> with the help of <a href="https://github.com/twbs/bootstrap/graphs/contributors">our contributors</a>.</p>
         <p>Code licensed under <a href="https://github.com/twbs/bootstrap/blob/master/LICENSE" target="_blank">MIT</a>, documentation under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p>
         <ul class="footer-links">
           <li>Currently v{{ site.current_version }}</li>