ruby: loosen websocket dependency to ~> 1.0
Bump the version of webbit to 0.4.15
Adding a timeout to Firefox cleanup process. Fixes issue 7272

Signed-off-by: Alexei Barantsev <barancev@gmail.com>
Typo fixes in webdriver.js documentation

Signed-off-by: Andreas Tolfsen <ato@mozilla.com>
Add Julie Ralph to .mailmap, and generate new AUTHORS
BODY element is always shown/displayed.
related section in the W3C spec:
https://dvcs.w3.org/hg/webdriver/raw-file/default/webdriver-spec.html#determining-if-an-element-is-displayed