Merge pull request #12 from Valks/master

Add <auto-generated />  tag so stylecop doesn't evaluate generated code.

Author: ufcpp

src/StringLiteralGenerator/Utf8StringLiteralGenerator.cs

@@ -12,7 +12,8 @@ namespace StringLiteralGenerator
     [Generator]
     public class Utf8StringLiteralGenerator : ISourceGenerator
     {
-        private const string attributeText = @"using System;
+        private const string attributeText = @"// <auto-generated />
+using System;
 namespace StringLiteral
 {
     [System.Diagnostics.Conditional(""COMPILE_TIME_ONLY"")]
@@ -88,7 +89,7 @@ string getFilename(INamedTypeSymbol type)
             string generate(INamedTypeSymbol containingType, IEnumerable<(string methodName, string value, Accessibility accessibility)> methods)
             {
                 buffer.Clear();
-
+                buffer.AppendLine("// <auto-generated />");
                 if (!string.IsNullOrEmpty(containingType.ContainingNamespace.Name))
                 {
                     buffer.Append(@"namespace ");