First of all, I want to thank you for making Sublime Text, for making Sublime Text Linux Builds, and especially for setting up repositories for various distributions. This is all fantastic!
I noticed something that I’d like to recommend be changed.
In the documentation page, it is listed to use sudo apt-get but apt-get is no longer needed as there is now sudo apt instead. I wrote an article about the new-ish tool replacement if you’d like to learn more.
The apt command-line tool is compatible with Debian 8+ & Ubuntu 14.04+