ref(client): use logging module

With this change, we can now have more power over how we filter and
deal with our logs.
feat(client): add colorized logging
feat(router): custom timeouts for builder and controller
fix(client): concatenate strings together
feat(version): add -dev flag for unversioned releases

This helps clear some confusion on the current version of Deis
users are currently working with.

[skip ci]
feat(version): add version constant

This utility package is useful for other packages such as deis/deisctl
to know what version of deis they are targeting against.

[skip ci]
Merge pull request #1785 from aledbf/parametrize_router_timeout

feat(router): custom timeouts for builder and controller.
Merge pull request #1739 from bacongobbler/use-logging

ref(client): use logging module; add colors to `deis logs`
Merge pull request #1806 from bacongobbler/dev-version

feat(version): use -dev flag for unversioned releases