Add ubuntu dependency instructions

README.md

@@ -13,4 +13,10 @@ View the published version of this document at the permalink [here](https://cdn.
 - `texlive-fontawesome5`
 - `texlive-sourcesanspro`
 
-After cloning, be certain to initialize the git submodules.
+## System requirements (Ubuntu):
+
+- `texlive`
+- `texlive-fonts-extra`
+- `texlive-xelatex`
+
+*After cloning, be certain to initialize the git submodules.*