Add link for API Guide

doroob.html

@@ -98,6 +98,15 @@
                   </a>
                 </li>
 
+                <li class="item-link">
+                  <a class="item-link__action" href="http://http://edx.readthedocs.io/projects/edx-platform-api/en/latest/courses/index.html">
+                    <h4 class="item-link__title">Open edx Platform APIs</h4>
+                    <div class="item-link__copy">
+                      <p>Documentation for the Open edX Platform APIs, including the Courses API.</p>
+                    </div>
+                  </a>
+                </li>
+
               </ul>
             </section>