README.md in boom-0.3.0 vs README.md in boom-0.4.0

@@ -22,10 +22,13 @@
     Boom! "shirt" in "gifs" is "http://cl.ly/NwCS/shirt.gif". Got it.
 
     $ boom shirt
     Boom! Just copied http://cl.ly/NwCS/shirt.gif to your clipboard.
 
+    $ boom delete gifs shirt
+    Boom! shirt is gone forever.
+
 And that's just a taste! I know, you're salivating, I can hear you from here.
 (Why your saliva is noisy is beyond me.) Check out the [full list of
 commands](https://github.com/holman/boom/wiki/Commands).
 
 ## Contribute
@@ -49,6 +52,6 @@
 
 [Zach Holman](http://zachholman.com) made this. Ping me on Twitter —
 [@holman](http://twitter.com/holman) — if you're having issues, want me to
 merge in your pull request, or are using boom in a cool way. I'm kind of hoping
 this is generic enough that people do some fun things with it. First one to use
-`boom` to calculate their tax liability wins.
\ No newline at end of file
+`boom` to calculate their tax liability wins.