Added documentation for locale option

docs/_i18n/en/documentation/table-options.md

@@ -489,5 +489,24 @@ The table options are defined in `jQuery.fn.bootstrapTable.defaults`.
         Support all custom attributes.
         </td>
     </tr>
-    </tbody>
+     <tr>
+        <td>locale</td>
+        <td>data-local</td>
+        <td>string</td>
+        <td>undefined</td>
+        <td>
+        Sets the locale to use (i.e. <code>'fr-CA'</code>). Locale files must be pre-loaded.
+        Allows for fallback locales, if loaded, in the following order:<br>
+        <ol>
+        <li>First tries for the locale as specified,</li>
+        <li>Then tries the locale with <code>'_'</code> translated to 
+        <code>'-'</code> and the region code upper cased,</li>
+        <li>Then tries the the short locale code (i.e. <code>'fr'</code> instead of <code>'fr-CA'</code>),</li>
+        <li>And finally will use the last local file loaded (or the dfault locale if no locales loaded).</li>
+        </ol>
+        If left undfined or an empty string, uses the last locale loaded (or <code>'en-US'</code>
+        if no locale files loaded).
+        </td>
+    </tr>
+   </tbody>
 </table>