get the package ignoring character case

src/isnd/Data/Packages/Package.cs

@@ -49,6 +49,11 @@ namespace isnd.Data.Packages
 
         public virtual Commit LatestCommit { get; set; }
 
+        internal static bool ValidateId(string pkgId)
+        {
+            return !string.IsNullOrWhiteSpace(pkgId);
+        }
+
         public PackageVersion GetLatestVersion()
         {
             var latest = Versions.Max(v => v.NugetVersion);