update installer to handle non-pi and other issues #1715
Merged
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Updated installer
give non-pi2+ users (pi0, odroid, jetson nano, mac, windows, ...) option to continue install
use current username vs hardcoded 'pi' to support non-pi install
check for npm installed. node install doesn't do npm anymore
check for mac as part of PM2 install, add install option string
update pm2 config with current username instead of hard coded 'pi'
check for screen saver config, "/etc/xdg/lxsession", bypass if not setup