Add the .gitignore file generated by meteor.
Insert the unfortunately-still-required @jsx directive.

Without this directive, JSX will not be enabled, and HTML literal
expressions like <Leaderboard /> will not parse.
Reimplement the player template as a React component.
Reimplement the leaderboard template as a React component.
Render <Leaderboard /> into the #outer <div> when DOM is ready.
Expand standard-app-packages, minus the handlebars package.

You could still use Handlebars if you wanted, but this app now uses React
instead of Handlebars for all its rendering needs!