Rules engine
Merge branch 'master' of https://github.com/egreene/PracticeGDVP
Fixed RulesValdation Issue, we should be using CodePropertyReferenceExpression tag in the RuleSet instead of CodeFieldReferenceExpression.
Merge branch 'master' of https://github.com/egreene/PracticeGDVP

Conflicts:
	CardShop/CardShop/Service/Rules/RuleService.cs