Pull command include image options from Identifier.

Signed-off-by: Nigel Magnay <nigel.magnay@gmail.com>
Nicer utility classes for parsing port bindings.

Signed-off-by: Nigel Magnay <nigel.magnay@gmail.com>
Make the MISC api use chunked encoding, everything else not to try
to mitigate against docker 1.2.0 issue without killing uploads.

Signed-off-by: Nigel Magnay <nigel.magnay@gmail.com>