Also made an HTTPError error type to make it easier to type
switch on errors.

feat(deploy): deploy charts

Cleaned up some of the code we inherited from DM.

feat(delete): add delete verb

fix(dm-install): do not require a namespace on kubectl create

When trying to create a new namespace, specifying a namespace will error

Also, remove a whole bunch of unused functions.

fix(cmd): prevent cmd init functions from racing

No running in the halls!

ref(cmd): break up command definitions

feat(get): add get deployment command

test(dm): add unit tests for dm client

ref(client): refactor url parsing

feat(travis): add travis build

fix(travis): add badge

feat(create): add create and pack verbs.

This adds `helm create CHART` and `helm pack CHART`. Both are really
basic.

NOTE: This is running off of my fork of dm until they get the new chart
stuff merged.

feat(dm-delete): add dm-delete command

Doctor