MSBuild path lookup should work with only VS 2017 installed

[Hafeok]

User story

As a developer, I want to use the generator with only Visualstudio 2017 installed so that i dont need more than one tool installed (Please replace the <> areas and remove this parentheses)

Expected behavior

The generator works with only Visual Studio 2017 installed.

Actual behavior

The generator needs an MSbuild installed from before 2015 in order for the Get-MSBuild path powershell function to return the proper path.

Steps to reproduce the behavior

See issue #107