nuke remaining less/tests/ files and move grid over to examples dir

grid.html

+---
+layout: example
+title: Grid template
+---
+
+<!-- Custom styles for this template -->
+<style>
+
+  /* Show grid styles from docs.css
+  -------------------------------------------------- */
+
+  .show-grid {
+    margin-bottom: 15px;
+  }
+  .show-grid [class^="span"] {
+    padding-top: 10px;
+    padding-bottom: 10px;
+    background-color: #eee;
+    border: 1px solid #ddd;
+  }
+  .show-grid [class*="span"]:hover {
+    background-color: #ddd;
+  }
+
+</style>
+
+
+<div class="container">
+
+  <div class="page-header">
+    <h1>Grids</h1>
+  </div>
+
+  <h2>Default grid columns</h2>
+  <div class="bs-docs-grid">
+    <div class="row show-grid">
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+      <div class="span1">1</div>
+    </div>
+    <div class="row show-grid">
+      <div class="span4">4</div>
+      <div class="span4">4</div>
+      <div class="span4">4</div>
+    </div>
+    <div class="row show-grid">
+      <div class="span6">6</div>
+      <div class="span6">6</div>
+    </div>
+    <div class="row show-grid">
+      <div class="span12">12</div>
+    </div>
+  </div>
+
+</div> <!-- /container -->