add comments to introduce the needsRender element of the renderReusingNode path
add comments to introduce the needsRender element of the renderReusingNode path

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>

PKRoma/enyo,bright-sparks/enyo,enyojs/enyo,zefsolutions/enyo,beni55/enyo,mcanthony/enyo,wikieswan/enyo,kustomzone/enyo,wikieswan/enyo,PKRoma/enyo,soapdog/enyo,kustomzone/enyo,beni55/enyo,mcanthony/enyo,soapdog/enyo,zefsolutions/enyo,bright-sparks/enyo,enyojs/enyo