[Tech] Apple Hardware Test

In case anyone has the problem I had with my Mac Pro not having a hardware test built in, here's a link to a place where you can get it for your system--if it doesn't already have it:

https://github.com/upekkha/AppleHardwareTest/blob/master/README.markdown

After Memtest86+ found nothing wrong, and Windows Memory Test crashing, this is a very useful tool to have.