Newer kubeclt and small fixes
As for such a small work, this repository seems to be recommended from time to time on #kubernetes Slack channel and received multiple stars on github. I fell obliged to update and maintain it to encourage new pull requests.
This small release includes:
- multiple refactors thanks to pull request by @jellonek
- small style fixes in messages and usage message
- updated kubectl to v1.9.2 (it's new enough for me)
- container now comes with curl installed