Add other package manager about ryzen-test

[suaefar]

Hi,
thank you for your suggestion.

I'm not too familiar with non-debian based distributions and dont want to invest the time.
The test can always be run from an Ubuntu live system.
I would accept a corresponding pull request of course.

[n3ziniuka5]

I am also running arch, I simply commented out sudo apt install build-essential || exit 1 and everything worked for me.

[b2ag]

I created #4 to give an example how to integrate the two lines I posted.

[suaefar]

I'm sorry, but the implementation throws an error on Ubuntu.
I had to revert the merged changes.
If you want this to be merged, please provide a patch that was tested on both platforms.

[b2ag]

I'm sorry! Such few lines and I still got it wrong. I forgot the "install" parameter for apt-get. Frankly, I also forgot the "-S" for Arch's pacman. I created a new pull request in #5 which I have verified to work with Ubuntu 16.04.3 LTS.