Support for cookies array from the command line
updates domains in the cookie command line example
accepts multiple optional `--cookies` args
uses review#cookies per default for adding cookies

review#cookie is kept for backward compatibility. It calls
review#cookies internally. review-cli is extended to accept multiple
`--cookie` argumements.

README is updated accordingly.
typo
refactor, simplify api
Merge branch 'jzelenkov-feature-multiple-cookies-from-cmd'
0.9.0