Making ID and token required if theyre given

Author: steverobbins

README.md

@@ -109,11 +109,11 @@ Configures your account ID and access token.
 
 ### `file`
 
-    $ php magedownload.phar file <name> <destination>
+    $ php magedownload.phar file <name> [<destination>]
 
 or
 
-    $ php n98-magerun.phar download:file <name> <destination>
+    $ php n98-magerun.phar download:file <name> [<destination>]
 
 Downloads the specified file to the given destination.
 

src/MageDownload/Command/AbstractCommand.php

@@ -43,13 +43,13 @@ protected function configure()
             ->addOption(
                 'id',
                 null,
-                InputOption::VALUE_OPTIONAL,
+                InputOption::VALUE_REQUIRED,
                 'Magento account ID'
             )
             ->addOption(
                 'token',
                 null,
-                InputOption::VALUE_OPTIONAL,
+                InputOption::VALUE_REQUIRED,
                 'Magento access token'
             );
     }