Code review comment for lp:~thumper/juju-core/support-string-slice-args

Reviewers: mp+199576_code.launchpad.net,

Message:
Please take a look.

Description:
Add gnuflag support for []string

Add a StringsValue type for gnuflag parsing.

This allows comma separated values to be used as a single arg, and they
are
split up into the []string passed in to the NewStringsValue function.

https://code.launchpad.net/~thumper/juju-core/support-string-slice-args/+merge/199576

(do not edit description out of merge proposal)

Please review this at https://codereview.appspot.com/39150045/

Affected files (+157, -0 lines):
   A [revision details]
   A cmd/args.go
   A cmd/args_test.go