Add a short blurb to the landing page, remove unnecessary RaisedButton cast.
Add a short blurb to the landing page, remove unnecessary RaisedButton cast.

ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery