*: switch to Godeps
Merge pull request #250 from jonboulle/master

*: switch to Godeps
system: embed config within EtcHosts and Update
*: fix warnings from go vet
test: run go vet
travis: install go vet
Merge pull request #252 from crawford/vet

go vet
script: move Script into config package
config: remove config validator
config/validate: add new config validator

This validator is still experimental and is going to need new rules in the
future. This lays out the general framework.
flags: add validate flag

This will allow the user to run a standalone validation.