Upgraded php parser and pimple
feature #128 Upgraded php parser and pimple (GrahamCampbell)

This PR was squashed before being merged into the 3.0-dev branch (closes #128).

Discussion
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Upgraded php parser and pimple

I've taken a real close look at the changes and the commit history of this repo to make sure this is done right. I've upgraded us to php parser 1.0 and pimple 3.0 (pimple required no changes). I've also cleaned up the imports.

Commits
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1a57b9b Upgraded php parser and pimple