This adds support for filtering list results. Filter strings are
passed from Helm to Tiller, where they are compiled as regular
expressions and executed against the list of releases. Only matching
releases are returned.

Filters are applied before limits and sorts.

fix(helm): fix for issue #680r

details: the host flag for install overrides the
TILLER_HOST env var. If neither are set,
host defaults to ":44134".

feat(tiller): stub in release history

fix(tiller): use correct port in rc spec

This provides the basics for the release history feature that
ReleaseStorage needs to support. The implementation for Memory storage
is only partial.

ref(helm): rename cache file to index file

fix(proto): fix style issues and documentation

fix(make): add protoc target to top Makefile

fix(helm): fix error formatting

This fixes indentation, documentation, and removes unused protobuf
files.

add alias for helm up for helm update

This fixes a number of issues with error formatting and handling in the
client.

Closes #668

fix(*): correct numerous golint errors

* also change additional references to cache to index
* see issue #665

rename remove to delete

feat(pkg): add a timeconv.String function

Rather than do the same formatting repeatedly, we can just call a
convenience function to format to a specific format.

Fix(readme): Add more documentation on getting started.

fix(helm): make install ouput similar to others

feat(helm): add helm update command

Closes #670

fix(helm): improve 'helm get' output

This makes the output of 'helm get' more like the output of other
Helm commands.

This now uses the global verbose flag (instead of a local one) and
formats the output in roughly the same style that 'helm list' and
'helm repo *' use.

feat(tiller): allow specifying namespace on cli

Add client-only flag to helm init that skips installing tiller.

Add search support