I see why you would think that, this part of the README is not well formulated and I'll change it. What I mean is that is similar to SQLite since it is an embedded database, but the key difference is that it's pure JS so you don't need to compile or install anything, which makes it very handy for Node Webkit, low concurrency Node.js webapps an rapid prototyping.
I totally get the use-case. As the author of Perl's DBD::SQLite I know exactly how high the demand for this sort of thing is. I think it's a great project and wish you luck with it. (and if you ever decide to lock the files, I'm also the author of node's fs-ext library which provides flock() support).