Precompiled Yosemite Ruby 2.1.2 does not have readline support included

[mhaylock]

I've been trying to work on an existing Rails project using Ruby 2.1.2 and I was getting the following message when running rake:

You're running a version of ruby with no Readline support
Please `gem install rb-readline` or recompile ruby --with-readline.

If I prevent the precompiled version from being downloaded and instead have ruby 2.1.2 built locally then deadline support is there and it works fine.

The precompiled ruby being installed is at http://s3.amazonaws.com/boxen-downloads/rubies/Darwin/10.10/2.1.2.tar.bz2. I haven't run into this issue with any of the other precompiled rubies I worked with so far.