fix(helm): fix two panics in 'helm search'

fix(tiller): allow different template engine

fix(helm): add 'helm repo rm' alias

ref(pkg/helm): package helm refactor

This is a minor fix to the Tiller internals to allow an alternate
template engine. This will still require future work to make it possible
to bootstrap in a different template renderer.

includes:
 - (#825) comptability interface between
          old/pkg/helm and new/pkg/helm

 - (#827) helm client scaffolding and
          rpc / release options

fix(helm): read values.yaml instead of values.toml

Closes #822

fix(helm): s/arbitary/arbitrary/

fix(chartutil): move values coalescing into chartutil

docs(*): fix links

fix(helm): add .tgz to package names on fetch

fix(helm): produce error if package name is inconsistent

'helm package' now produces an error if the directory name and the name
in Chart.yaml are not the same.

Closes #812

Closes #809

fix(ci): use gcloud absolute path

fix(gitignore): die, DS_Store, die.

fix(chartutil): fix nil error on values

Fixes: https://github.com/kubernetes/helm/issues/803

feat(ci): push canary image on successful ci build

fix(docs): add sources field on example chart.yaml

fix(docs): mark templates and charts directories optional

feat(scripts): add script to sync chart repos

Closes #797

feat(chartutil): Update to use YAML instead of TOML for values files.

fix(#795): start probes server on expected port, ':44135'