docs(guide): add note about value attribute

- Add note about value attribute for the progress tag with IE

Author: wesleycho

docs/content/guide/ie.ngdoc

@@ -29,6 +29,9 @@ To ensure your Angular application works on IE please consider:
 
 1. Use `ng-style` tags instead of `style="{{ someCss }}"`. The latter works in Chrome and Firefox
    but does not work in Internet Explorer <= 11 (the most recent version at time of writing).
-2. For the `type` attribute of buttons, use `ng-attr-type` tags instead of 
-   `type="{{ someExpression }}"`.  If using the latter, Internet Explorer overwrites the expression
+2. For the `type` attribute of buttons, use `ng-attr-type` tags instead of
+   `type="{{ someExpression }}"`. If using the latter, Internet Explorer overwrites the expression
    with `type="submit"` before Angular has a chance to interpolate it.
+3. For the `value` attribute of progress, use `ng-attr-value` tags instead of
+   `value="{{ someExpression}}"`. If using the latter, Internet Explorer overwrites the expression
+   with `value="0"` before Angular has a chance to interpolate it.