Change bundled Modernizr to bare minimum build instead of including e…

…very test

Also, amend the documentation accordingly

README.textile

@@ -157,9 +157,9 @@ h3. JavaScript
 
 h4. /js/modernizr.js
 
-The theme uses "Modernizr":http://www.modernizr.com/ to provide a HTML5 shim for older pre-HTML5 browsers. Modernizr is a great tool that also equips you with a set of tests that can be used to help provide a good experience to all end users, regardless of their browser choice (within limits!) - techniques commonly known as 'progressive enhancement' or 'graceful degradation' depending on whether you add features for capable browsers or provide fallback methods for less-capable browsers respectively.
+The theme uses "Modernizr":http://www.modernizr.com/ to provide HTML5 and media query support for older browsers. Modernizr is a great tool that also equips you with a set of tests that can be used to help provide a good experience to all end users, regardless of their browser choice (within limits!) - techniques commonly known as 'progressive enhancement' or 'graceful degradation' depending on whether you add features for capable browsers or provide fallback methods for less-capable browsers respectively.
 
-It is strongly recommended that you read the Modernizr documentation available at their website and then build you own streamlined version of Modernizr with just the tests you'll actually foresee yourself using (the version included here is a full 'kitchen-sink' version with all tests included, not ideal for production use).
+It is strongly recommended that you read the Modernizr documentation available at their website and then build you own streamlined version of Modernizr with just the tests you'll actually foresee yourself using (the version included here is a 'bare minimum' version with just html5shim and media queries - no extra tests).
 
 h2. Known issues