* add csproj ref to sln
* Remove Microsoft.NET.Test.Sdk NuGet reference. The xunit.runner.visualstudio package is now sufficient for running tests in VS in the latest version (15.7.5)
* use RTM versions of XUnit 2.4.0 that got published today
* Update XUnit in hosting project as well to newer release
ConvertFrom-Markdown is used for converting a markdown document or string to a MarkdownInfo object.
It can optionally return a HTML or VT100 encoded string in addition to a AST of the markdown document.
Show-Markdown is used to either display the VT100 encoded string on console or redirect the HTML string to the browser.
Set/Get-MarkdownOption cmdlets get be used to view or set markdown rendering options.
