[WIP] Fix deps

[c0ze]

What this PR does :

• s/Sirupsen/sirupsen/ (embrace lower case dep convention)
• use my fork of iron-io/runner (which also uses lowercase sirupsen import, and some other fixes) When iron-io runner is updated, we can switch back to iron-io/runner
• remove "github.com/moby/moby/cli/config/configfile" dependency and bring it into repository (that package does not exist anymore, also I couldn't find any other suitable replacement)
• fix github.com/ucirello/supervisor import as cirello.io/supervisor (we may want to fork this)

Previously we were on a hardcoded magic Gopkg.toml which was outdated (giving warning because of the obsolete dependencies entries) We can now do a clean dep init and dep ensure.