Fix for custom port in sync strategy #377

#377

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I think list of excludes should be injected here from configuration. In my use case I build my project in phing and use Rocketeer to deploy process. So I have vendor directory earlier and I want to be able upload it. Now it's hardcoded. And here I have question: how to disable composer install on server? I did it by change strategy to... bower. I think there should be more clean solution.