Homebrew/homebrew — pull request #31110 by docwhat (2014-07-25 03:58:06+00:00)
Title: SUGGESTION: add comment about updating docker and boot2docker

docker and boot2docker generally release new versions simultaneously.
This is because boot2docker's ISO contains docker within it.

This comment just reminds people who update one to update the other.

Feel free to reject this. If you accept #31109 I can rebase this for you
after the bottles are generated.