Add warning message for failure to read conf

Add ability to specify CIDR for Virtualbox minikube

The configuration file is optional, however when/if we move more
options to be configurable through the viper yaml file, this would be
nice to see when debugging.

Don't drop errors during creation retries.

Revise readme

Configure /data as a persisted directory.

Fixing file:// uri issue for --iso-url flag

Added tests for GetLocalkubeDownloadURL

Updated k8s_releases.json to include v1.3.4 localkube release

Updated checksums in schema.json and releases.json

and checksum change in RELEASING.md.

Uprade to Kubernetes v1.3.4

Added instructions to upload localkube to GCS as part of updating kub…

Fix releasing instruction for updating latest.

Kubernetes/localkube versioning via a flag and tests

Fixed URL in LOCALKUBE_RELEASING.md

help message to add URI information, updated docs, fixed unused vars and removed unneeded comments

Don't pull dashboard container image if present

One step in supporting an offline setup, see #391

flag URL and added check to prepend 'v' to version # if it is missing

url) and to copy files from host to the vm instead of curl within vm.
Also made it so that sshutil.Transfer is done via a Reader.

default Kubernets version value.

updated tests

Specify supported drivers per platform