Correct the require statement.

Changed 'require cinch-cooldown' to 'require cinch/cooldown' as per http://guides.rubygems.org/name-your-gem/. The require not being able to find the gem threw me off for a while until i noticed that page.
Fix a typo

;)
Merge pull request #2 from rikai/patch-1

Corrected the require statement to follow proper standards