Update CONTRIBUTING md to note the Enyo style guide.
Update CONTRIBUTING md to note the Enyo style guide.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)

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