Sprint 2: Fix our company name

As we discussed during Sprint 1, one of the required attributes on the Package element is Manufacturer, to give the package an owner. HeatWave gives us a default to avoid giving us a project that doesn't immediately build. And it gives us a manufacturer name that's like to be noticed and fixed: TODO Manufacturer. So let's fix that name.

Open Package.wxs and change the value of the Manufacturer attribute from TODO Manufacturer to Edgerock Concepts.

<Package
  Name="WixTutorialPackage"
  Manufacturer="Edgerock Concepts"
  Version="1.0.0.0"
  UpgradeCode="64deef2a-cf99-4a0c-be41-5faa802a9502">

Easy.