I have a bunch of ancillary XML and XSLT files that I want to edit and manage in visual studio.
The files do not logically belong under any code project in my solution
In my situation, I needed to have a set of configuration files that would be common to many projects. To simply achieve this, I performed the following steps:
xcopy "$(TargetDir)Configuration\*" "$(SolutionDir)TARGET_PROJECT\$(OutDir)" /i /v /q /s /y
In the above, replace TARGET_PROJECT with your actual project
This will copy all the files in the Configurations folder to the output directory of the project that needs the configuration files (eg. MyProject/bin/Debug, etc).