Multi Monitor Config
Put this script in your /etc/X11/Xsession.d/ directory after removing the .txt extension.
This script is setup to work with two external monitors (VGA1 and HDMI1) the internal monitor (LVDS1). The VGA1 monitor is set to be above LVDS1 and the HDMI1 monitor is set to be to the right of LVDS1. All the parameters can be changed or removed.