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

ref(deploy): adjusting to new dm registry interface

fix(Makefile): Fix Makefile targets

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