Added readme and program runs to 100000

Program.cs

@@ -9,7 +9,7 @@ namespace FizzBuzz
         static void Main(string[] args)
         {
             int start = 01;
-            int end = 1000;
+            int end = 100000;
 
             //For information about Dotnet List Can be found 
             // https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.list-1?view=net-6.0

README.md

@@ -0,0 +1,3 @@
+# README
+
+Just execute the following command `dotnet run`.