Rename solution directory to Elwig

Elwig/Documents/BusinessLetter.cshtml.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Elwig.Models;
+
+namespace Elwig.Documents {
+    public class BusinessLetter : BusinessDocument {
+        public BusinessLetter(string title, Member m) : base(title, m) {
+
+        }
+    }
+}