Merge pull request #3 from isaacs/master

Make purging by url actually purge by url, and catch failures properly
Strict-er jshint config
Bump package.json and add Isaac to contributor list
allow for optional post params.
made sure tests pass, cleaned up whitespace.
Merge pull request #4 from bcoe/form-parameters

Added Support for Form Parameters to Request Method
Increment package version
Merge branch 'master' of https://github.com/thisandagain/fastly
Refactor governance tests and clean-up legibility
Always return Error objects, and provide statusCode on failure