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 <email@example.com>
Submitted by: Christopher Boumenot <boumenot at gmail.com>