feat(ci): setup parallel testing

chore(ci): bump docker version

fix(docs): typo in developers.md

fix typo

ref(ci): remove glide setup in circle.yml

ref(cmd): refactor cmd for unit testing

Fixing linter typos

fix(helm): fix linter test panic

Handle a previously unhandled error in the linter. This simply bails out
if a chart's values files do not parse.

Also, changed the implementation of CoalesceValues to return a map even
on error.

Support Linter for Values namespace

fix(chartutil): Ensure ReadValues doesn't return a nil map

fix(lint): Return non-zero exit status when lint errors present

feat(tiller): add .Template object in templates

chore(docs): update "Name" field in values.yaml

feat(lint): lint an archived chart

fix(cmd): remove --file flag for helm get

fix(*): fix various style issues from make test-style