LB-1577 : Check if installation guide is up to date and reflects version 2.0

Started with Yauhen version, deleted the disable(exclude) plugin section
and added info about how to setup the paths to exiv2/ffmpeg/gm
Merge pull request #681 from ioanpocol/liveblog16

LB-1577 : Check if installation guide is up to date and reflects version...
LB-1579
:
Refactor configuration

Changed the name of the parameters that are sent to nodejs
Merge pull request #682 from ioanpocol/liveblog16

LB-1579