Add Repeat Yourself as a zsh til.

README.md

@@ -158,6 +158,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Clear The Screen](zsh/clear-the-screen.md)
 - [Create A File Descriptor with Process Substitution](zsh/create-a-file-descriptor-with-process-substitution.md)
 - [Killing A Frozen SSH Session](zsh/killing-a-frozen-ssh-session.md)
+- [Repeat Yourself](zsh/repeat-yourself.md)
 - [Saying Yes](zsh/saying-yes.md)
 - [Search History](zsh/search-history.md)
 - [Switch Versions of a Brew Formula](zsh/switch-versions-of-a-brew-formula.md)

zsh/repeat-yourself.md

@@ -0,0 +1,14 @@
+# Repeat Yourself
+
+Use the `repeat` command to repeat yourself. You can repeat yourself a
+number of times
+
+```
+$ repeat 5 say Hello World
+```
+
+or you can repeat yourself indefinitely
+
+```
+$ repeat -1 say Hello World
+```