Updated front page features

This adds correct links to the linked text on the front page under
the features section. There is still one panel which needs to be
written, the last one that includes the AJAX text again, before it
can really be considered finished.

The wording around the Bootstrap theme was adjusted pending further
discussion about how that is going to be handled.

Author: kevin-brown

docs/index.html

@@ -36,33 +36,49 @@ <h1>Select2</h1>
     <div class="col-sm-4">
       <i class="fa fa-language"></i>
       <h4>In your language</h4>
-      <p>Select2 comes with support for <a href="#">RTL environments</a>, <a href="#">searching with diacritics</a> and <a href="#">over 40 languages</a> built-in.</p>
+      <p>
+        Select2 comes with support for
+        <a href="examples.html#rtl">RTL environments</a>,
+        <a href="examples.html#diacritics">searching with diacritics</a> and
+        <a href="examples.html#language">over 40 languages</a> built-in.</p>
     </div>
 
     <div class="col-sm-4">
       <i class="fa fa-paint-brush"></i>
       <h4>Fits in with your theme</h4>
-      <p>Fully skinnable, CSS built with Sass and seamlessly fitting Bootstrap 3.</p>
+      <p>
+        Fully skinnable, CSS built with Sass and an
+        <a href="https://github.com/fk/select2-bootstrap-theme">optional theme for Bootstrap 3</a>.
+      </p>
     </div>
 
     <div class="col-sm-4">
       <i class="fa fa-database"></i>
       <h4>Remote data support</h4>
-      <p><a href="#">Using AJAX</a> you can efficiently search large lists of items.</p>
+      <p>
+        <a href="examples.html#data-ajax">Using AJAX</a> you can efficiently
+        search large lists of items.</p>
     </div>
   </div>
 
   <div class="row s2-docs-featurette">
     <div class="col-sm-4">
       <i class="fa fa-plug"></i>
       <h4>Fully extensible</h4>
-      <p>The <a href="#">plugin system</a> allows you to easily customize Select2 to work exactly how you want it to.</p>
+      <p>
+        The <a href="announcements-4.0.html#plugin-system">plugin system</a>
+        allows you to easily customize Select2 to work exactly how you want it
+        to.
+      </p>
     </div>
 
     <div class="col-sm-4">
       <i class="fa fa-tag"></i>
       <h4>Dynamic item creation</h4>
-      <p>Allow users to type in a new option and <a href="#">add it on the fly</a>.</p>
+      <p>
+        Allow users to type in a new option and
+        <a href="examples.html#tags">add it on the fly</a>.
+      </p>
     </div>
 
     <div class="col-sm-4">