modify the scaffolding page to fix the language around preboot/grid variables

bootstrap.css

@@ -6,7 +6,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
- * Date: Tue Jan 24 17:04:46 PST 2012
+ * Date: Tue Jan 24 18:24:24 PST 2012
  */
 article,
 aside,

docs/assets/css/docs.css

@@ -168,7 +168,8 @@ section {
 .subhead .subnav-fixed {
   position: fixed;
   top: 40px;
-  z-index:1000;
+  z-index: 1030;
+  width: 938px;
 }
 
 

docs/templates/pages/scaffolding.mustache

@@ -157,7 +157,7 @@
     </div>
     <div class="span4">
       <h3>{{_i}}How to customize{{/i}}</h3>
-      <p>{{_i}}Modifying the grid means changing the three <code>@grid*</code> variables and recompiling Bootstrap. Change the grids in the preboot.less file and use one of the <a href="#compiling">four ways documented to recompile</a>.{{/i}}</p>
+      <p>{{_i}}Modifying the grid means changing the three <code>@grid*</code> variables and recompiling Bootstrap. Change the grid variables in variables.less and use one of the <a href="#compiling">four ways documented to recompile</a>. If you're adding more columns, be sure to add the CSS for those in grid.less.{{/i}}</p>
     </div>
     <div class="span4">
       <h3>{{_i}}Staying responsive{{/i}}</h3>