Options parameter in files.getFiles() is now optional
Options parameter in files.getFiles() is now optional

In spec, options parameter appears to be optional (https://github.com/pkgcloud/pkgcloud/blob/master/docs/providers/rackspace/storage.md#clientgetfilescontainer-options-functionerr-files--), however if null is passed, the method generates "TypeError: Cannot read property 'limit' of null".
Phanatic/pkgcloud,Phanatic/pkgcloud,bunglestink/pkgcloud,dionjwa/pkgcloud,apla/pkgcloud,hacor/pkgcloud,Hopebaytech/pkgcloud,DonSchenck/pkgcloud,mdsummers/pkgcloud,mcanthony/pkgcloud,temka1234/pkgcloud,andrewsomething/pkgcloud,songanbui/pkgcloud,pkgcloud/pkgcloud