fix(storage): add mutex to in-memory

feat(tiller): add support for dry run install

This adds a RW Mutex on the in-memory storage.

This adds support for dry run on install, as well as providing
enough info for an install to display (verbose) manifests. While
doing this, I ended up just storing the rendered manifests for
simplicity.

feat(engine): add recursive template resolution

feat(tiller): add initial tiller client for basic helm installs.

feat(helm): add local chart repository workflow spike

  1. install command loads chart archive.
  2. invokes helm api to transform the pkg/chart.Chart type
     to it's proto model.
  3. the client then establishes a connection to tiller.
  4. sends InstallReleaseRequest, receives InstallReleaseResponse.

todo (for complete install):
  - walk pkg/chart.{Values,Deps,Templates} types and populate proto
    definitions for various apis/messages.

fix(*): style fixes

fix(Makefile): skip gofmt on proto gen code

fix(tiller): replace codegangsta with cobra

fix(helmet): remove helmet

ref(package): add error handling on args

feat(helm): implement home command

feat(tiller): add template and release to install

feat(local-cluster): add kubernetes startup script

feat(init): add local config step to init