diff --git a/daily-image-widget.php b/hubblesite-daily-image-wordpress.php
similarity index 100%
rename from daily-image-widget.php
rename to hubblesite-daily-image-wordpress.php
diff --git a/readme.txt b/readme.txt
index a4e5036..c8c259e 100644
--- a/readme.txt
+++ b/readme.txt
@@ -25,6 +25,10 @@ Turn off "HubbleSite Styles" in the Widget Options and then style the elements w
 
 `the_hubblesite_daily_image_widget()` will do just that.
 
+= What do I need to run the unit tests? =
+
+[PHPUnit](http://www.phpunit.de/) and [MockPress](http://github.com/johnbintz/mockpress/).
+
 == License ==
 
 The HubbleSite Daily Image Widget is released under the GNU GPL version 2.0 or later.
\ No newline at end of file