Ubuntu readme dependencies

[JasperPluijmers]

Tried to build alt1-electron a while ago but it didn't work. Decided to take a better look and turned out the ubuntu dependencies in the readme didn't work for me:

E: Unable to locate package libxcb-dev
E: Unable to locate package libxcb-shm-dev
E: Unable to locate package libxcb-composite-dev
E: Unable to locate package libxcb-record-dev
E: Unable to locate package libxcb-shape-dev

Had to install the following packages:

libprocps-dev
libxcb-record0-dev
libxcb-composite0-dev
libxcb-shm0-dev

After doing this the install step worked, but I couldn't do the run watch step. For this I had to upgrade the ts-node version in package.json:

-               "ts-node": "^9.1.1",
+               "ts-node": "10.8.1",

I can make a pr with these changes, but I have no overview of what this means for the rest of the project.