Adding the comments for the early CS's

CS2 - Challenge Solution/Main.java

@@ -1,12 +1,23 @@
 import java.util.Scanner;
 
+/*
+    CS2 Challenge Solution
+
+    Original Challenge Description: Build a program that requests a user's name,
+    and then prints a greeting. 
+*/
 public class Main {
     public static void main(String[] args) {
+        //Setup a Scanner to work with System.in
         Scanner scan = new Scanner(System.in);
 
+        //Start by printing some text that will prompt the user to enter a name
+        //then print another line that Says "Hello" and then whatever the user entered.
         System.out.print("Please enter your name: ");
         System.out.println("Hello " + scan.nextLine());
 
+        //Close the scanner, while not really necessary, it's a good habit to get into
+        //for other resources. 
         scan.close();
     }
 }