Log Message:
Update ruby-rack-test to 0.6.2.

== 0.6.2 / 2012-09-27

* Minor enhancements

  * Support HTTP PATCH method (Marjan Krekoten' #33)
  * Preserve the exact query string when possible (Paul Grayson #63)
  * Add a #delete method to CookieJar (Paul Grayson #63)

* Bug fixes

  * Fix HTTP Digest authentication when the URI has query params
  * Don't append default ports to HTTP_HOST (David Lee #57)