libgconf linux dependency

[carlfsmithiii]

I just installed Koa11y on Ubuntu 18.04 by following the video instructions, and Koa11y did not run out of the box. I tried running Koa11y from the cli, and got a no such file or directory error for libgconf-2.so.4

It was fixed with apt install libgconf-2-4, and Koa11y is working. I am passing this along in case it helps someone or can be bundled in a future version.