Maybe for someone with no bio background. But these are pretty standard techniques in molecular biology. The only tricky part is collecting the sample without exposing yourself to the virus.
Running these kits out of your garage is like running a tweaked, existing file system for a home network. Not completely trivial, but it's not Dropbox, guys.
And you don't think this test needs to scale, with the millions of people needing to be tested?
[0] http://www.csun.edu/science/biology/AP_biology/text%20files/...