Suggestion: "Better" checking for presence of cudnn_64_7.dll

[arronsmith]

My use case for Alturos.Yolo is in a vvvv plugin, which has a plugin directory structure which means that the main executable (vvvv.exe) doesn't end up next to Alturos.Yolo.dll, which means that

if (File.Exists(@"x64\cudnn64_7.dll"))

will always return false even if the file is present. Everything goes on to work perfectly anyway, so it's not a big deal, but a more robust approach might be to look for cudnn with a path relative to the Alturos DLL, rather than the "main" executable:

string assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            if (File.Exists(Path.Combine(assemblyFolder, @"x64\cudnn64_7.dll")))
            {
                report.CudnnExists = true;
            }

(This requires a reference to System.Reflection to work)