add mode to all block cipher examples

phpseclib/Crypt/AES.php

@@ -25,7 +25,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $aes = new \phpseclib3\Crypt\AES();
+ *    $aes = new \phpseclib3\Crypt\AES('ctr');
  *
  *    $aes->setKey('abcdefghijklmnop');
  *

phpseclib/Crypt/Blowfish.php

@@ -16,7 +16,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $blowfish = new \phpseclib3\Crypt\Blowfish();
+ *    $blowfish = new \phpseclib3\Crypt\Blowfish('ctr');
  *
  *    $blowfish->setKey('12345678901234567890123456789012');
  *

phpseclib/Crypt/DES.php

@@ -18,7 +18,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $des = new \phpseclib3\Crypt\DES();
+ *    $des = new \phpseclib3\Crypt\DES('ctr');
  *
  *    $des->setKey('abcdefgh');
  *

phpseclib/Crypt/RC2.php

@@ -16,7 +16,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $rc2 = new \phpseclib3\Crypt\RC2();
+ *    $rc2 = new \phpseclib3\Crypt\RC2('ctr');
  *
  *    $rc2->setKey('abcdefgh');
  *

phpseclib/Crypt/Rijndael.php

@@ -30,7 +30,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $rijndael = new \phpseclib3\Crypt\Rijndael();
+ *    $rijndael = new \phpseclib3\Crypt\Rijndael('ctr');
  *
  *    $rijndael->setKey('abcdefghijklmnop');
  *

phpseclib/Crypt/TripleDES.php

@@ -12,7 +12,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $des = new \phpseclib3\Crypt\TripleDES();
+ *    $des = new \phpseclib3\Crypt\TripleDES('ctr');
  *
  *    $des->setKey('abcdefghijklmnopqrstuvwx');
  *

phpseclib/Crypt/Twofish.php

@@ -16,7 +16,7 @@
  * <?php
  *    include 'vendor/autoload.php';
  *
- *    $twofish = new \phpseclib3\Crypt\Twofish();
+ *    $twofish = new \phpseclib3\Crypt\Twofish('ctr');
  *
  *    $twofish->setKey('12345678901234567890123456789012');
  *