Offset where the directories and files go from $HELM_HOME to $HELM_HOME/repository

ref(helm): fix helm update

chore(helm): fix flag description

fix(helm): allow user to skip namespace creation

This addresses two issues: #699 and #713. It is now possible to skip
creating namespaces. In additional, a trivial bug was fixed that allows
you to create a custom namespace.

fix(helm): change helm repo list to return error when empty

fix(helm): print err if no repositories to update

fix(helm): update main help text

fix(helm): stop processing if lint can't find a chart

fix(helm): print msg and exit when list has no results

This prints an error if 'helm update' finds no repositories to update.

Following other commands, an empty list should return an error.

This exits with an error code if the path resolution fails to find a
chart.

Print no matches found if none are found

fix(cmd): fix init command description

feat(helm,tiller): improve list output, support filters

Previously, paging used the last release name of the current set to ask
for more results. Now switched to using the first name of the next set.

Not sure I like this method. It makes the user experience more
complicated.

Validate Version in Chart.yaml and parse values.toml for helm limt.

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.