Why? There's nothing inherently Buddhist about meditation; there's no reason to bring religion into this. Buddhism is a tradition that has been practicing meditation for a long time, but their practice is shrouded in their mysticism, so it's difficult to know what's real and what isn't.
This is coming from someone who once thought like you, by the way. Although I am an atheist, I read a lot about Buddhism and meditation, even medidated with a monk. The religious aspects are a complete waste of time, so you're better off learning from a secular source.