Allow to use studio create foo --submodule git@github.com:acme/foo.git

src/Console/CreateCommand.php

@@ -7,6 +7,7 @@
 use Studio\Config\Config;
 use Studio\Creator\CreatorInterface;
 use Studio\Creator\GitRepoCreator;
+use Studio\Creator\GitSubmoduleCreator;
 use Studio\Creator\SkeletonCreator;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
@@ -57,6 +58,12 @@ protected function configure()
                 'g',
                 InputOption::VALUE_REQUIRED,
                 'If set, this will download the given Git repository instead of creating a new one.'
+            )
+            ->addOption(
+                'submodule',
+                'gs',
+                InputOption::VALUE_REQUIRED,
+                'If set, this will download the given Git repository (as submodule) instead of creating a new one.'
             );
     }
 
@@ -92,6 +99,8 @@ protected function makeCreator(InputInterface $input)
 
         if ($input->getOption('git')) {
             return new GitRepoCreator($input->getOption('git'), $path);
+        } elseif ($input->getOption('submodule')) {
+            return new GitSubmoduleCreator($input->getOption('submodule'), $path);
         } else {
             $creator = new SkeletonCreator($path);
             $this->installParts($creator);

src/Creator/GitSubmoduleCreator.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Studio\Creator;
+
+use Studio\Shell\Shell;
+
+class GitSubmoduleCreator extends GitRepoCreator
+{
+
+    protected function cloneRepository()
+    {
+        Shell::run("git submodule add $this->repo $this->path");
+        Shell::run("git submodule init");
+    }
+
+}