feat(*): add Values namespace to templates

This makes the Table() method more flexible than the original version.
It allows either a map[string]interface{} or a chartutil.Values to be
treated as a table.

This adds the .Values namespace qualifier to all values

Templates directory lint rules

Fixing unit test

feat(code of conduct): add code of conduct

fix(CONTRIBUTING): add guidelines for security issues

Closes #662

Closes #850

NGINX typo

fix(ci): replace gcloud with docker login

Template rules

Adding chart errors

Added function that checks the existence of all the values in the templates

Adding chartfile unit tests

Testing runLinterRule

Fixing out of range

Fixing out of range

Improving quote detector

feat(helm): install directly from repo

docs(examples): unify the examples

fix(LICENSE): add copyright year and authors

A helm install command will try to load a chart from a local file first.
But if a local file is not found, it will try to fetch a file from a
matching repo request. The file will be downloaded to the client,
and then sent to Tiller for installation.

fix(tunnel): handle blank namespace

As noted in #860, there were a few places where the alpine and nginx
charts differed. This unifies the two, using common labels and
conventions.

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