Update

CurrentSdkVersion is null by default now
Adjusted README
LocalPackageManager and RemotePackageManager are internal classes now
Added checks for initialization in PackageManager

PMF.Tests/UnitTest1.cs

@@ -1,3 +1,4 @@
+using PMF.Managers;
 using System;
 using Xunit;
 
@@ -8,7 +9,11 @@ namespace PMF.Tests
         [Fact]
         public void Test1()
         {
+            PackageManager.Start();
 
+            // Do stuff
+
+            PackageManager.Stop();
         }
     }
 }