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Currently, you can do it manually or using http://apidocjs.com . (The latter is disabled for new accounts due to heavy load; will be back this week.) Swagger (and a few other even cooler options) are on their way!
Creator of apiDoc here.... really nice that you use apiDoc :-) I really like your nice and clean template. A similar project was in my mind since i create apiDoc, but due the lack of time i am happy now that you create such a project. Will link to your site soon, so that apiDoc users can see your good alternative for creating and hosting a documentation.
I'd love to talk more! My email is greg@readme.io. Awesome work on apiDoc; it's been great.