heroku/heroku — pull request #235 by dekokun (2012-02-15 02:09:16+00:00)
Title: add "http://" to proxy if proxy not include protocol

If you access with proxy, you can't use some API ex. 'heroku logs' 'heroku ps' in case of 'http_proxy=host:port'(without protocol)

I modified to add "http://" to proxy if proxy_env not include protocol.