Wirble is a set of enhancements to Irb all included together in one easy-to-use
package.  Specifically, Wirble adds a saved history, a couple of useful
shortcuts, and color to Irb.  Wirble also enables a Irb's built-in
tab-completion and a simpler prompt.

Author:	Paul Duncan <pabs@pablotron.org>
WWW:	http://pablotron.org/software/wirble/