Closes #847.

feat(cmd): silence usage on error

Closes https://github.com/kubernetes/helm/issues/864

fix(chartutil): fix chartutil.Expand function

fix(tiller): stop printing <no value> when var is missing

This ensures that all necessary directories
get created when expanding a chart in the
chartutil.Expand function. fixes #892

fix(deps): pin kubernetes to a tagged release

fix(deps): fix unvendored dependencies

Fixes pulling a few dependencies from GOPATH

```
% glide -q list

...

GOPATH packages:
    github.com/inconshreveable/mousetrap
    github.com/opencontainers/runc/libcontainer/cgroups/fs
    github.com/opencontainers/runc/libcontainer/configs
    google.golang.org/appengine/urlfetch
    google.golang.org/appengine
```

Adding squote test case and generic message

Removing debugging line

Avoid use of -f for docker tag

fix(docs): fix nginx example chart name

Instead of printing "no value", this prints an empty string by
default, but adds a Strict flag on the engine, which (if true)
will cause a template render to error out if a value is not supplied.

Strict is set to false so that developers can instead use `default` to
set default values.

As of docker 1.10, `-f` has been removed as an option for `docker tag`

https://docs.docker.com/engine/deprecated/

The name was not correctly truncating, which occasionally resulted
in naming errors, since Kubernetes restricts names to 24 characters.

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.