WIP check compatability of configuration before sending messages.
Increase start wait timeout. Hopefully to avoid CI errors.
Check capabilities for screenshot, javascript and rotation
Merge pull request #21 from stuart/feature/capability_switching

Feature/capability switching
Add listing of sessions and browsers
WS
Added remote driver.
Fix tests for remote driver
Add sessions list to Firefox port state
Merge pull request #22 from stuart/feature/session_and_browser_list

Add listing of sessions and browsers
Merge branch 'master' into feature/remote_driver

Conflicts:
	lib/webdriver/firefox/port.ex
Merge pull request #23 from stuart/feature/remote_driver

Added remote driver.
Update docs and bump version
Fix deprecations for regexes and default arguments
Documentation update
Session documentation cleanup.