Require accesslogger.rb from the main file
This is necessary to make the code in the README work as written.

You could also require 'rack/requestash/accesslogger' from the
application code.
Merge pull request #8 from LeeXGreen/middleware-usage

Require accesslogger.rb from the main file
include the user agent in the log output
Merge pull request #9 from rwygand/master

include the user agent in the log output