Why not to use `README.md` by default instead of `README.rdoc`

Hello~

Any reason rails not using README.md by default instead of README.rdoc?

Thanks,

Askar

Hello~

Any reason rails not using `README.md` by default instead of `README.rdoc`?

That's going to be the case in Rails 5, see the rationale in the commit
message:

https://github.com/rails/rails/commit/89a12c931b1f00b90e74afffcdc2fc21f14ca663

Xavier