add Programmyday form github

PalindromeExtention/Program.cs

@@ -0,0 +1,26 @@
+namespace PalindromeExtention
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            string input = "otto";
+            Console.WriteLine(input.Palindrom());
+        }
+    }
+    static class PalindormExtention
+    {
+        public static bool Palindrom(this string input)
+        {
+            string index = input.Replace(" ","").ToLower();
+            for (int i = 0; i < index.Length / 2; i++)
+            {
+                if (index[i] != index[index.Length - i - 1])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+    }
+}