message: Add some prerequisites to the readme
  * add some prerequisites to the readme
  Add some really basic guidance on how to get started with the Terminal project
  * Add note about VS2019
diff: @@ -49,6 +49,17 @@ Further, we realized that this would allow us to build the terminal's renderer a
  # Getting Started
  +## Prerequisites
  +
  +* You must be running Windows 1903 (build >= 10.0.18362.0) or above in order to run Windows Terminal
  +* You must have the [1903 SDK](https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk) (build 10.0.18362.0) installed
  +* You will need at least [VS 2017](https://visualstudio.microsoft.com/downloads/) installed
  +* You will need to install both the following packages in VS:
  + - "Desktop Development with C++"
  + - "Universal Windows Platform Development"
  + - If you're running VS2019, you'll also need to install the "v141 Toolset" and "Visual C++ ATL for x86 and x64"
  +* You will also need to enable Developer Mode in the Settings app to enable installing the Terminal app for running locally.
  +
  ## Contributing
  We are excited to work alongside you, our amazing community, to build and enhance Windows Terminal\!
  