Add "private file" flag?

[joshfinnie]

With PR #9, files are now public by default. Not sure if we should allow people to push private files... would there be a use-case for this?

[mcwhittemore]

Yea, I was thinking about this last night.

Its probs a simple -p flag option but is -p public or private?

[joshfinnie]

I am thinking default public (it is meant to share images originally) and a -p flag to make it private.