remove un-used local variables
Merge pull request #3053 from sfishel18/master

Remove un-used local variables
Update devDependencies

PhantomJS fixed the really annoying "CoreText performance note:" message in
1.9.3 or so.
Merge pull request #3054 from caseywebdev/deps

Update devDependencies
Always delegate in #setElement.
Merge pull request #3060 from braddunbar/delegate-events

Always delegate in #setElement.
Correct split infinitives. 

Can improve readability, especially for English-as-a-second-language readers.
Merge pull request #3063 from janaspage/correct-split-infinitives

Correct split infinitives.
broken link for tilemill example
Merge pull request #3067 from shidel-dev/master

broken link for tilemill example