Share to Hub 0.3

This is a test app for the Web Share Target API. It will only work in browsers that have implemented the draft proposal. At the time of writing, this works with:

• Google Chrome for Chrome OS, Windows, or Linux, with chrome://flags#enable-experimental-web-platform-features enabled.
  • To "register" this app with Google Chrome, click the Chrome menu → More tools → Add to desktop/shelf (you can cancel the dialog; this just forces the manifest to download). Then it should show up as a target when using Web Share (demo site).
• Google Chrome Dev or Chrome Canary for Android.
  • To "register" this app with the Android OS, click the Chrome menu → Add to home screen. Then it should show up as a target when sharing from any other Android app (including Web Share).