Stubbed out Account Deactivation docs and updated access. [WIP]
Clarify required heroku access. Add script links.
Reformatted support docs to make access/requirements more explicit. Added paypal pay-out docs.
Remove authorship byline.
update libsass; closes #33

ref: https://github.com/gittip/www.gittip.com/pull/2215
Merge pull request #32 from gittip/deactivating-account-docs

Add support docs on deactivating accounts.
Remove vendoring.
Install and use peep. Add crptograhic hashes. Add missing filesystem pkg.
Remove all vendored packages.
Don't install non-specified dependencies.
Use explicit commit hash for peep fork.
Use @erikrose's master branch of peep pkg.
Use official peep release.
Add crypto hash for new libsass pkg.