Add webm support to README

README.md

@@ -105,7 +105,6 @@ https://www.transifex.com/projects/p/tinyboard-vichan-devel/
 
 Oekaki
 ------
-
 vichan makes use of [wPaint](https://github.com/websanova/wPaint) for oekaki. After you pull the repository, however, you will need to download wPaint separately using git's `submodule` feature. Use the following commands:
 
 ```
@@ -115,6 +114,10 @@ git submodule update
 
 To enable oekaki, add all the scripts listed in `js/oekaki.js` to your `instance-config.php`.
 
+WebM support
+------------
+Read `inc/lib/webm/README.md` for information about enabling webm.
+
 License
 --------
 See [LICENSE.md](http://github.com/vichan-devel/vichan/blob/master/LICENSE.md).