Added option in Windows/MSVC to build unit test applications from ins…

…talled (via vcpkg) library (with "-installed" after debug / release) OR from code in cloned repo (without "-installed" after debug / release). Updated gitignore to ignore new build directories.

Create CONTRIBUTING.md

Add more options for viewing downloaded quick start documents.

Merge pull request #46 from cpsusie/issue_45

Close Issue 45 .