add path and domain options to create_cookie

Conflicts:
	spec/shared_examples_for_api.rb
trying to fit in path and domain
tests passing but not covering enough

doesn't test default domain behaviour
doesn't test path/domain for all drivers
use lvh.me to redirect to localhost with subdomain support #20
Merge branch 'master' into create-cookie

* master:
  add gem version badge to readme
  Update README.md
  Update README.md
  minor release: secure cookie printout standardised across adapters
  Update README.md
  minor version; webkit drier added #24
  Update README
  Webkit returns nil when secure is false
  Update specs with secure cookie flag
  Rack::Test has .secure? method
  Update README.md
readme note on dns lookup failure
add webdriver domain support and put domain setting back into the api tests
minor version 2.5.0 adds domain and path setting to create cookie