Add table's .info variant to migration guide

docs/migration.html

@@ -290,7 +290,7 @@ lead: "Guidance on how to upgrade from Bootstrap v2.x to v3.x with emphasis on m
         </tr>
         <tr>
           <td>Contextual table rows</td>
-          <td><code>.success</code> <code>.danger</code> <code>.warning</code> <code>.active</code></td>
+          <td><code>.success</code> <code>.danger</code> <code>.warning</code> <code>.active</code> <code>.info</code></td>
         </tr>
         <tr>
           <td>Contextual panels</td>