Merge pull request #263 from habibasorour/issue_249_comment

Issue 249 fixed: add comment to 4.1

Author: pearcej

source/ch4_conditionals.ptx

@@ -20,7 +20,7 @@
         <program interactive="activecode" language="python">
             <code>
 score = 95
-if score &gt;= 90:
+if score &gt;= 90: # Note the colon at the end of the line
     print("Excellent work!")
             </code>
         </program>
@@ -36,9 +36,9 @@ if score &gt;= 90:
             <code>
             public class SimpleIfExample {
                 public static void main(String[] args) {
-                    int score = 70;
-                    if (score &lt;= 70) {
-                        System.out.println("Needs work!");
+                    int score = 95;
+                    if (score &gt;= 90) { // Note the parentheses and curly braces
+                        System.out.println("Excellent work!");
                     }
                 }
             }