Add grunt.js build script

- Move Bootstrap LESS files into new subdirectory

- Change app.css to app.less, add @import's to utilize
Bootstrap variables and mixins

- Remove plugins.js and main.js

- Move Bootstrap JS plugins into new subdirectory

- Add new _main.js file with example DOM-based routing
script that works off the WordPress body_class

- lib/scripts.php has been updated to remove all extra
CSS and JS files and also places JavaScript in the footer

assets/css/less/bootstrap/breadcrumbs.less

@@ -0,0 +1,24 @@
+//
+// Breadcrumbs
+// --------------------------------------------------
+
+
+.breadcrumb {
+  padding: 8px 15px;
+  margin: 0 0 @baseLineHeight;
+  list-style: none;
+  background-color: #f5f5f5;
+  .border-radius(4px);
+  li {
+    display: inline-block;
+    .ie7-inline-block();
+    text-shadow: 0 1px 0 @white;
+  }
+  .divider {
+    padding: 0 5px;
+    color: #ccc;
+  }
+  .active {
+    color: @grayLight;
+  }
+}