DB files over roughly 2.5 GB are not supported

[fluffyx]

I was getting an "Invalid argument @ io_fread" error, similar to that described in CocoaPods/CocoaPods#8786.

I created a monkeypatch that made it work for my project: https://gist.github.com/fluffyx/18f9b0464176014f4d69cfb3ef8941ea

There might be a better, cleaner solution that could be merged into this gem.