Implemented ShouldRenderFile

Please review.
I'd link it between the projects yeah, let me know when it's pushed and I'll check it.

Pretty sure what you have above is right. You can download nuget.exe and run `nuget pack` on the nuspec to check it (make sure you've done a release build), just open up the .nupkg file it generates in your zip viewer of choice (I use 7zip) and check readme.txt is in the root of the package..