Ability to exclude paths from token replacement.

[GreyGhostStudio]

Ability to exclude files or paths from token replacement. During the creation of a Solution (sln), this would allow someone to include project templates in a local HelixTemplates folder. If that folder isn't excluded it would run thru those folders and perform token replacement. The other issue is when you include dll or exe in the templates folder structure the template engine appears to try to open and save the files corrupt. It would be nice to tell the engine to copy these files but skip trying to perform token replacement.