Update ReactiveHistory.UnitTests.csproj

tests/ReactiveHistory.UnitTests/ReactiveHistory.UnitTests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
 
   <PropertyGroup>
-    <TargetFrameworks>net461;netcoreapp1.1</TargetFrameworks>
+    <TargetFrameworks>net461;netcoreapp2.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <EnableDefaultCompileItems>False</EnableDefaultCompileItems>
     <GenerateAssemblyInfo>False</GenerateAssemblyInfo>