wp-cli/wp-cli — pull request #362 by westonruter (2013-03-22 00:36:15+00:00)
Title: walk up directory tree to find config file

Allows WP-CLI to be invoked from anywhere within a project, so you are not limited to being in the directory where the `wp-cli*.yml` file is.
The `DOCUMENT_ROOT` is then set to the supplied path relative to the config file.