fastestforward/instrumental_agent — pull request #21 by moutten (2012-02-24 16:06:40+00:00)
Title: Add system_timer dependency when using Ruby version < 1.9

A recent change to the `Instrumental::Agent` (on 5391f6e) requires the `system_timer` gem while using a ruby version less than 1.9. This commit updates the gem spec to reflect that requirement.