Upload synchronizable documents to server


I’m developing a simple android app, and i’m using CouchbaseLite on my phone. I’m following the GrocerySync example, and it works fine. But i have a little problem. I have got some json file, and i want to upload them to the couchbase server. I could do that using cbdocloader, but this way my app can’t “see” the uploaded documents.
Is there a way to upload file through sync gateway, or make them synchronizable?