feat(kube): add update logic to kube client

* Thanks for the reminder adam :)

This commit adds an Update function to the client.
The Update function takes in the modified manifests and
the original manifests. It then iterates through the modified
objects, creates objects not found in kubernetes, and updates
objects that exists but have been modified. Finally, it
iterates through the original resources and checks to see if
they have been deleted in the modified configuration and then
proceeds to delete them. #690

Check for the tgz extension while collecting chart paths

ref(templates): change GetString to Get

Add a strict flag to helm lint

Add name-template flag for installation that allows the user to speci…

This changes "pkg/chartutil".Files.Get to return a string, removes
"pkg/chartutil".Files.GetString, and adds
"pkg/chartutil".Files.GetBytes.

Closes #1020

Switch from rc to deployment for running tiller

feat(engine): add 'partial' function

fix(helm): rename --reuse-name to --replace

Add name-template flag for installation that allows the user to specify a template used for release name generation

This adds a context-aware template function called 'partial' that will
allow rendering other templates in a chart into a string value, which
can then be piped to other functions. Usage is something like
'{{partial 'path/to/template.yaml' | indent 2}}'

This might be a bad idea.

Closes #1005

docs(charts): describe {{.Files}}

ref(cmd): refactor init command

chore(*): upgrade dependencies

Closes #1010

feat(tiller): add Files map to templates

Templates can now access the non-template files in a chart by using
the '{{.Files}}' map inside of a template.

Relates to #950

feat(helm,tiller): add --reuse-name flag to helm install

feat(kube): reap related resources on delete

This will allow helm install to re-use names for releases that were
already deleted.

chore(README): link to Semver 2 spec

fix(tiller): remove partials and empty manifests

This removes partials and empty manifests during the sortHooks
operation. Doing so makes sortHooks the defacto place for sorting
manifests, hooks, and partials.

Closes #991

fix(cmd): set description for inspect

feat(*): add upgrade command and validations

Add subcommands to inspect only chart or values