Added version(TempleUnitest) to test files

Hi, 

I was trying to integrate template in my project, and I figured out that the unit tests where run by dub everytime I run my project, so I changed your test files to runt the unit tests only if the TemplateUnitest version is present.

is it ok? if not, how I can stop dub to run temple unit tests with my project tests?

Thanks,
Bogdan