docs(examples): add nginx example chart

fix(tunnel): display friendly error on connect issues

feat(tiller): record release status deployed

Fix typo

fix(chartutil): remove a wayward println

Fixes: #686

This adds an nginx chart that shows off more of the template system's
capabilities.

fix(tiller): save failed releases

Linter structure changes + extra chartfile rules

fix(sprig): update sprig library to 2.3.0

When a release failed, the release record was not saved. That led to the
case where Kubernetes resources were deployed, but the release that
deployed them was not tracked.

To fix, we now save the release on failure. The 'helm delete' operation
can delete failed resources.

Closes #851

fix(tunnel): allow tunneling to non-default namespace

docs(developer): update developer documentation

New template functions like trunc will be really helpful for dealing
with Kubernetes naming limits.

Fixed tests

Adding chart name linter

Add lint error

Moving to blocks

Moving to method

Moved lint rules to functions

Semantic version validation

Linting engine

Adding sources and home validations

Sharing file loading

Sharing file loading

Rolling back readme

Rewriting other linters

Fixing tests

Typo

Using chart.Metadata

Fixing format

Adding UNKNOWN in Engine

Adding tabs

Fixing tabs

Closes #840

fix(proto): keep a local protoc Go plugin

This works around issues where $GOPATH/bin has a different version of
the protobuf Go plugin than the one Kubernetes uses.

fix(issue/841): capitalization and punctuation consistency.

Sorting Wildcard function

feat(helm): add 'helm get values --all' for all values

Add support for displaying computed configuration values. This is
useful for debugging.

Templates partials

fix(pkg/chart): remove pkg/chart

This is the final step in replacing pkg/chart with pkg/chartutil.

This also removes the last of the TOML code.

feat(pkg/ignore): add helmignore library

ref(pkg/helm) replace  'pkg/helm' with 'pkg/helmx'

includes:
 - (#826) removal old pkg/helm

ref(pkg/helm): package helm refactor