Sync submodules before updating

Rakefile

@@ -87,6 +87,7 @@ end
 
 desc "Clone default bundles into vendor/bundles directory"
 task "clone-default-bundles" do
+  `git submodule sync`
   `git submodule update --recursive --init`
 end
 

script/bootstrap

@@ -19,4 +19,5 @@ exit_unless_xcode_exists
 exit_unless_npm_exists
 
 npm install
+git submodule sync
 git submodule update --recursive --init