name_resolve should be an ArgCommand, not a Command
name_resolve should be an ArgCommand, not a Command

Assuming that I am trying to use name_resolve correctly:

    >>> api.name_resolve('QmXfrS3pHerg44zzK6QKQj6JDk8H6cMtQS7pdXbohwNQfK')

It looks as if it needs to be specified as an `ArgCommand`, rather than
as a `Command`.

Closes #4.

alexander255/py-ipfs-api,alexander255/py-ipfs-api,ipfs/py-ipfs-api,ipfs/python-ipfs-api,moreati/python-ipfs-api,ipfs/py-ipfs-api