update docs

Author: ruchevits

docs/api.html

@@ -147,6 +147,13 @@ <h2> Attributes</h2>
             </span> Request fields will be filled with example value (if provided in spec) </td>
             <td class='default-col'>true</td>
           </tr>
+
+          <tr>
+            <td class="attr-col mono bold right">persist-auth </td>
+            <td class="gray"><span class='bold dark-gray'>Allowed:<span class='blue'> true | false </span>
+            </span> Authentication will be persisted to localStorage </td>
+            <td class='default-col'>false</td>
+          </tr>
         </table>
 
         <a id="att-colors"></a>