Update npm-shrinkwrap.json
Update npm-shrinkwrap.json

Includes the dependencies for the latest version of popit-api.

Updated using latest npm, so this should work correctly with newer
versions of npm, older version will simply ignore fields that they don't
understand.

mysociety/popit,openstate/popit,mysociety/popit,openstate/popit,Sinar/popit,mysociety/popit,Sinar/popit,mysociety/popit,mysociety/popit,Sinar/popit,Sinar/popit,openstate/popit,openstate/popit