Assets are not being pushed to SVN

I recently pushed a [brand new project](https://github.com/fjarrett/user-session-control) to WP.org and the assets dir did not transfer to [the SVN repo](http://plugins.svn.wordpress.org/user-session-control/assets/).

My steps were simply adding a `svn-url` file and running `$ dev-lib/svn-push`.
