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

fix(cmd): ensure tiller is running for connection

fix(tiller): merge -f values correctly

I edited releaseMock as part of this PR

Signed-off-by: Grantseltzer <grantseltzer@gmail.com>

Fixes: https://github.com/kubernetes/helm/issues/981

feat(helm): support command-line values for install

fix(tiller): improve deletion error messages

feat(ci): validate license block in source files

Add support for specifying key/value pairs on the command line, instead
of only in a YAML file.

This currently accepts either command line pairs or a YAML file, but
does not support combining the two.

Closes #944

feat(ci): run test coverage in parallel

This stops a repeat deletion from sending requests all the way to
Kubernetes, and gives a clear error message when a deletion is requested
on an already deleted resource.

Relates to #972

```
./scripts/coverage.sh  37.25s user 4.15s system 144% cpu 28.615 total
```
```
./scripts/coverage.sh  47.96s user 6.77s system 567% cpu 9.647 total
```

fix(tiller): provide filename when YAML is bad

feat(helm): add 'helm inspect'

This makes the template system less tolerant in the name of detecting
YAML parse errors before things are sent to Kubernetes. It returns a
more detailed error message when a template creates a manifest which is
not valid YAML.

Closes #957

This basic version of helm inspect displays the Chart.yaml and
values.yaml files on STDOUT.

Closes #967