Fixes issue #811 by updating upstream spf13/pflag and using StringArrayVar in place of StringSliceVar for docker-env flag

In the boot2docker provisioner increase the timeout to fix a flake in
the linux virtualbox integration tests.  Note, this is a patch of a
vendored package.

These were referenced by kube2sky and our dns implementation

* Inconsistencies between godeps and vendor

* Update spf13/cobra to 9c28e4b

Previous HEAD position was f62e98d... Merge pull request #300 from
cshung/master
HEAD is now at 9c28e4b... Merge pull request #339 from bogem/fixes

* Update spf13/pflag to c7e63cf

Previous HEAD position was 1560c10... Bump Go versions in Travis config
HEAD is now at c7e63cf... Merge pull request #93 from bogem/flagStrings

* Update spf13/viper to ed0a967

Previous HEAD position was 382f87b... Remove expensive TRACE logging
HEAD is now at ed0a967... Fix retrieval of pflag stringSlice (#240)

* Update docker/machine to 91e368

Update to kubernetes 1.4-alpha3.

This required a "go get k8s.io/client-go" before godep save would work.

@aaron-prindle's commit made it upstream, and this picks up a few other fixes.

Mainly to add support for bindPflags to string slices

Changed docker-machine and sshutil to support hostnames with colons in them, for example ipv6 addresses

messages to allow for stacktraces for future error-reporting. Added
error messages to .Wrap errors.

Use the exact same version as the virtualbox driver.

documentation.  Added test in Travis for making sure docs are up-to-date.

In the future will add feature to wait for dashboard to start and then
display if it is not running yet.

A manual change was required in kube2sky.go.
Updates were required in appc/spec and a few other libraries.

go run cli/main.go start will bring up a VM with localkube
running and print out instructions on how to use it.

Lots to do still:
- This is not very safe to re-run, but it will attempt to reuse a VM
if it already exists
- Commands for stopping/restarting/deleting

This commit adds a root CLI with no commands yet. This was generated
using "cobra init", with only a few modifications:

- License fixes.
- Removal of viper config loading.
- Help text modifications.