Add a lot of docs

app/code/Transport/Email.php

@@ -157,6 +157,11 @@ class Email extends TransportAbstract
         $this->encoding = $this->config['encoding'];
     }
 
+	/**
+	 * @param array $files
+	 * 
+	 * @return $this
+	 */ 
     private function setFiles($files = array())
     {
         if (is_array($files) && !empty($files)) {
@@ -165,6 +170,11 @@ class Email extends TransportAbstract
         return $this;
     }
 
+	/**
+	 * @param array $streams
+	 * 
+	 * @return $this
+	 */ 
     private function setStreams($streams = array())
     {
         if (is_array($streams) && !empty($streams)) {
@@ -240,5 +250,3 @@ Content-Disposition: attachment; filename=" . $name . "
     }
 
 }
-
-?>

app/code/Transport/FTP.php

@@ -51,6 +51,9 @@ class Ftp extends TransportAbstract
         return $this;
     }
     
+    /**
+     * @return bool
+     */
     public function send()
     {
         $sent = true;
@@ -82,6 +85,8 @@ class Ftp extends TransportAbstract
         if (!$sent) {
             throw new \Exception('At least an upload didnt work.');
         }
+        
+        return $sent;
     }
     
     public function __destruct()

app/code/Transport/Folder.php

@@ -7,7 +7,7 @@ use Shikiryu\Backup\Backup\BackupAbstract;
 
 class Folder extends TransportAbstract
 {
-
+	/** @var string */
     protected $folder;
 
     public function __construct(BackupAbstract $backup, array $config = array())
@@ -21,6 +21,7 @@ class Folder extends TransportAbstract
 
     /**
      * @return bool
+     * 
      * @throws \Exception
      */
     public function send()

app/code/Transport/SFTP.php

@@ -6,13 +6,17 @@ use phpseclib\Net\SFTP as LibSFTP;
 
 class Sftp extends TransportAbstract
 {
-
+	/** @var string */
     protected $host;
+    /** @var int */
     protected $port = 22;
+    /** @var string */
     protected $login;
+    /** @var string */
     protected $password;
+    /** @var string */
     protected $folder;
-
+	/** @var LibSFTP */
     private $connection;
 
     /**
@@ -32,6 +36,7 @@ class Sftp extends TransportAbstract
 
     /**
      * @return bool
+     * 
      * @throws \Exception
      */
     public function send()

app/code/Transport/TransportAbstract.php

@@ -7,7 +7,9 @@ use Shikiryu\Backup\Backup\BackupAbstract;
 abstract class TransportAbstract
 {
 
+	/** @var BackupAbstract */
     protected $backup;
+    /** @var array */
     protected $config;
 
     public function __construct(BackupAbstract $backup, array $config)