Update version string to 2.4.0-pre.1. Enyo-DCO-1.1-Signed-Off-By: Kevin Schaaf (kevin.schaaf@lge.com)
Update version string to 2.4.0-pre.1.
Enyo-DCO-1.1-Signed-Off-By: Kevin Schaaf (kevin.schaaf@lge.com)

mcanthony/onyx,mcanthony/onyx,enyojs/onyx,enyojs/onyx