Update package.json to 2.0.0 + contributors list

[ffd8]

Develop package.json still says 1.0.1 (especially noticed w/ new docs preview and glaring version # in upper corner).

Should consider using NPM's all-contributors-cli to keep current list of contributors rather than manually (and out of date) added to that json.package?

Maybe there's a better alternative for keeping list on project up to date?

[ff6347]

+1 on both. Maybe we should set it to 2.0.0-beta