patch bash to fix CVE-2014-6271 and CVE-2014-7169
add another bash patch to fix http://twitter.com/taviso/statuses/514887394294652929
Use debootstrap ubuntu flavor
Use Heroku Stack Images as baseimage

Switch the builder to use the unmodified Heroku cedar-14 base stack
Source @ https://github.com/heroku/stack-images/blob/master/bin/cedar-14.sh
Merge pull request #9 from yabawock/cedar14

Switch to Heroku stack-images as base