Update version string to 2.6.0-pre.2
Update version string to 2.6.0-pre.2

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