Fix AssemblyInfo for .NET Standard 2.0

yfakariya · yfakariya · commit 3258dfce528b · 2017-10-22T16:43:59.000+09:00
diff --git a/src/MsgPack/Properties/AssemblyInfo.cs b/src/MsgPack/Properties/AssemblyInfo.cs
@@ -43,6 +43,8 @@
 #else
 #error Unexpected Xamarin!
 #endif // XAMARIN
+#elif NETSTANDARD2_0
+".NET Standard 2.0"
 #else
 ".NET Framework 4.6"
 #endif // NET4_5..
