Uppercase first character of dump-autoload description

src/Composer/Command/DumpAutoloadCommand.php

@@ -28,7 +28,7 @@ class DumpAutoloadCommand extends Command
         $this
             ->setName('dump-autoload')
             ->setAliases(array('dumpautoload'))
-            ->setDescription('dumps the autoloader')
+            ->setDescription('Dumps the autoloader')
             ->setDefinition(array(
                 new InputOption('optimize', 'o', InputOption::VALUE_NONE, 'Optimizes PSR0 packages to be loaded with classmaps too, good for production.'),
             ))