added tag build support

Author: duanenewman

Directory.Build.props

@@ -39,10 +39,14 @@
     <IS_PREVIEW Condition="'$(IS_PREVIEW)'=='' AND '$(APPVEYOR_PULL_REQUEST_NUMBER)'!=''">true</IS_PREVIEW>
     <IS_PREVIEW Condition=" '$(IS_PREVIEW)' == '' ">false</IS_PREVIEW>
 
+    <IS_TAGGED Condition=" '$(IS_TAGGED)' != '' AND '$(APPVEYOR_REPO_TAG)' != '' ">$(APPVEYOR_REPO_TAG)</IS_TAGGED>
+    <IS_TAGGED Condition=" '$(IS_TAGGED)' == '' ">false</IS_TAGGED>
+
   </PropertyGroup>
 
 <!-- Versioning -->
   <PropertyGroup>
+    <EASE_RELEASE Condition=" '$(EASE_RELEASE)' == '' AND '$(IS_TAGGED)' AND '$(APPVEYOR_REPO_TAG_NAME)' != '' ">$(APPVEYOR_REPO_TAG_NAME)</EASE_RELEASE>
 
     <Version Condition=" '$(EASE_RELEASE)' != '' ">$(EASE_RELEASE)</Version>
     <!-- Update this version when incrementing Library Versions -->