Improved the installation instructions
Improved the installation instructions

Instructions how to create the initial configuration file added.

Signed-off-by: Jonny Lamb <505168e2a88049f340ba715e7f51053c5aa8eb50@debian.org>

jonnylamb/debexpo,jadonk/debexpo,jonnylamb/debexpo,swvist/Debexpo,jonnylamb/debexpo,swvist/Debexpo,jadonk/debexpo,swvist/Debexpo,jadonk/debexpo