Smoke test project now references preview mscorlib

***NO_CI***

Author: josesimoes

README.md

@@ -20,7 +20,7 @@ Create an SDK-style project file (`.csproj`):
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="nanoFramework.CoreLibrary" Version="1.17.11" />
+    <PackageReference Include="nanoFramework.CoreLibrary" Version="2.0.0-preview.52" />
   </ItemGroup>
 
 </Project>

test/SmokeTest/SmokeTest.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="nanoFramework.CoreLibrary" Version="1.17.11" />
+    <PackageReference Include="nanoFramework.CoreLibrary" Version="2.0.0-preview.52" />
   </ItemGroup>
 
 </Project>