Use underscored keys and 'name' attribute in region config

The YAML config isn't in AWS land, so as long as we're consistent,
we can make things a bit more readable.

Signed-off-by: Evan Owen <kainosnoema@gmail.com>
Use template default values, when available

AWS will set the defaults if we don't. Might as well. The diff will
now also accurately reflect what's being changed.

Signed-off-by: Evan Owen <kainosnoema@gmail.com>
Fix bug with SimpleDelegator in Ruby 2.1

Signed-off-by: Evan Owen <kainosnoema@gmail.com>
Fix warnings with bundler 1.5.0.beta1

The previous dependancies were too specific.

Signed-off-by: Evan Owen <kainosnoema@gmail.com>
Display debug level logging as a dark grey

Signed-off-by: Evan Owen <kainosnoema@gmail.com>