improved coverage of Builder.teardown function in pkg/build
Fix ARTIFACT env-var being replaced if only one entry is listed.

Also, use WriteEnv.
Merge pull request #191 from fudanchii/deployment

Fix `artifact` env-var being replaced if only one entry is listed.
added code for privileged mode with unit tests
added tests for when creating / starting build container fails
Merge remote-tracking branch 'origin/master'
add admin checkbox for setting a repo privileged
add --privileged to drone build command

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>
Merge pull request #131 from vito/privileged-builds

Privileged builds support
[api] First pass at "jitsu deploy". Thanks @fiveisprime!
Merge pull request #204 from indexzero/add-jitsu-deploy

First pass at "jitsu deploy"
removed unused fmt package
added nodejitsu to readme
Instructions for local development
install docker 0.9.0 in the vagrant box by default
set num of workers using command line params
implemented tsuru deploy plugin.
Merge pull request #207 from sherzberg/vagrant-docker-install

install docker 0.9.0 in the vagrant box by default
Merge pull request #211 from andrewsmedina/tsuru

initial tsuru deploy support
Merge pull request #209 from Clever/configure-num-workers

set num of workers using command line params