Add output of header record skipping to toString implementation

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1522880 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -595,6 +595,7 @@ public class CSVFormat implements Serializable {
         if (getIgnoreSurroundingSpaces()) {
             sb.append(" SurroundingSpaces:ignored");
         }
+        sb.append(" SkipHeaderRecord:").append(skipHeaderRecord);
         return sb.toString();
     }