Change demo_google to use chrome.identity.launchWebAuthFlow, so users don't need to be signed into Chrome.
Change XMPPSocialProvider to call this.view.postMessage('logout').  Refactor code to no longer download code from the web and use local files + NPM modules instead.
Change freedom to peerDependency, remove font link in styles.css
Add better comments and TODOs.
Merge pull request #33 from freedomjs/dborkan-fixes

New Google auth, add logout to demo, refactor code