Add delete presentation by id endpoint section. Addresses #588.

Author: bparth24

index.html

@@ -1993,6 +1993,15 @@ <h4>Get a Specific Presentation</h4>
         <div class="api-detail"
           data-api-endpoint="get /presentations/{id}"></div>
       </section>
+
+      <section>
+        <h4>Delete a Specific Presentation</h4>
+        <p>
+        </p>
+
+        <div class="api-detail"
+          data-api-endpoint="delete /presentations/{id}"></div>
+      </section>
     </section>