Zepto compat: pass the AJAX url in options

Zepto does not want to have url as the first argument, so we put it into the options object instead.
issue a poll when page becomes visible
move long polling interval to 25 secs in sync with Discourse
version bump to 1.0.0
Merge pull request #21 from julik/master

Zepto compat: pass the poll url to $.ajax via settings instead of the first argument
FEATURE: allow passing in of the $.ajax dependency in
FEATURE: allow unsubscription for a single func
version 1.0.1
FEATURE: allow adding access control headers
amend api to use lookup style which works in multisite
API needs to be more generic
FIX: ensure custom headers are shipped everywhere
up version