Added updateSubmodules option for fetch task

.gitignore

@@ -1 +1,2 @@
 node_modules/
+.idea/

tasks/deploy/fetch.js

@@ -23,6 +23,7 @@ module.exports = function (gruntOrShipit) {
     .then(checkout)
     .then(reset)
     .then(merge)
+    .then(updateSubmodules)
     .then(function () {
       shipit.emit('fetched');
     });
@@ -172,5 +173,25 @@ module.exports = function (gruntOrShipit) {
         shipit.log(chalk.green('Branch merged.'));
       });
     }
+
+    /**
+     * update submodules
+     */
+
+    function updateSubmodules() {
+
+      if (!shipit.config.updateSubmodules) {
+        return Promise.resolve();
+      }
+
+      shipit.log('Updating submodules.');
+      return shipit.local(
+          'git submodule update --init --recursive',
+          {cwd: shipit.config.workspace}
+          )
+          .then(function () {
+            shipit.log(chalk.green('Submodules updated'));
+          });
+    }
   }
 };

test/unit/tasks/deploy/fetch.js

@@ -73,4 +73,24 @@ describe('deploy:fetch task', function () {
       done();
     });
   });
+
+  it('should create workspace, create repo, checkout and call sync, update submodules', function (done) {
+    shipit.config.updateSubmodules = true;
+
+    shipit.start('deploy:fetch', function (err) {
+      if (err) return done(err);
+      expect(mkdirpMock).to.be.calledWith('/tmp/workspace');
+      expect(shipit.local).to.be.calledWith('git init', {cwd: '/tmp/workspace'});
+      expect(shipit.local).to.be.calledWith('git remote', {cwd: '/tmp/workspace'});
+      expect(shipit.local).to.be.calledWith(
+          'git remote add shipit git://website.com/user/repo',
+          {cwd: '/tmp/workspace'}
+      );
+      expect(shipit.local).to.be.calledWith('git fetch shipit --prune && git fetch shipit --prune "refs/tags/*:refs/tags/*"', {cwd: '/tmp/workspace'});
+      expect(shipit.local).to.be.calledWith('git checkout master', {cwd: '/tmp/workspace'});
+      expect(shipit.local).to.be.calledWith('git branch --list master', {cwd: '/tmp/workspace'});
+      expect(shipit.local).to.be.calledWith('git submodule update --init --recursive', {cwd: '/tmp/workspace'});
+      done();
+    });
+  });
 });