Don't set WordWrap in readme example, add comments about usage includ…

…ing 78 as a good value to use, fixes PHPMailer#327

README.md

@@ -71,7 +71,6 @@ $mail->addReplyTo('info@example.com', 'Information');
 $mail->addCC('cc@example.com');
 $mail->addBCC('bcc@example.com');
 
-$mail->WordWrap = 50;                                 // Set word wrap to 50 characters
 $mail->addAttachment('/var/tmp/file.tar.gz');         // Add attachments
 $mail->addAttachment('/tmp/image.jpg', 'new.jpg');    // Optional name
 $mail->isHTML(true);                                  // Set email format to HTML

class.phpmailer.php

@@ -149,6 +149,7 @@ class PHPMailer
 
     /**
      * Word-wrap the message body to this number of chars.
+     * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.
      * @type integer
      */
     public $WordWrap = 0;

examples/code_generator.phps

@@ -172,10 +172,10 @@ try {
 
         $example_code .= "\n\$body = <<<'EOT'\n" . htmlentities($body) . "\nEOT;";
 
-        $mail->WordWrap = 80; // set word wrap
+        $mail->WordWrap = 78; // set word wrap to the RFC2822 limit
         $mail->msgHTML($body, dirname(__FILE__), true); //Create message bodies and embed images
 
-        $example_code .= "\n\$mail->WordWrap = 80;";
+        $example_code .= "\n\$mail->WordWrap = 78;";
         $example_code .= "\n\$mail->msgHTML(\$body, dirname(__FILE__), true); //Create message bodies and embed images";
 
         $mail->addAttachment('images/phpmailer_mini.png', 'phpmailer_mini.png'); // optional name