Merge pull request #9 from zevisert/patch-1

docs: fix velero version in Readme

Update plugin code for Velero 1.2.0

Capture new vendored dependencies using `dep ensur`
Make examples use kubectl patch for secrets
Update README instructions

Merge pull request #8 from StackPointCloud/v0.10-compat

Initial Ark v0.10.0 refactor

Merge pull request #4 from StackPointCloud/fix-1

Create a unique snapshot name