Adding ID to generated json.
Adding ID to generated json.

RayHightower/lunrjs-sandbox,RayHightower/lunrjs-sandbox-2,yortz/octopress-lunr-js-search,RayHightower/lunrjs-sandbox-2,RayHightower/lunrjs-sandbox,RayHightower/rayhightower.github.octo-broken,RayHightower/rayhightower.github.octo-broken,RayHightower/rayhightower.github.octo-broken,yortz/octopress-lunr-js-search