While digging through some HTTP/2 settings I came upon this resource for checking. Pretty handy! As a side note, it looks like IIS 8.5 (Windows Server 2012) doesn't support the HTTP/2 protocol. I was also surprised to see that 1&1 hosting doesn't support it with the hosting package I purchased for this site. I might have to give them a call about that.
As a side note, for those of you with Windows Server 10 and IIS 10, you should be good to go with HTTP/2 by default.