Update release notes for 7.x-1.1

I was curious what changes were in 7.x-1.1 vs. 7.x-1.0, so I used grn to figure it out.

Here's what the output says:

Changes since 7.x-1.0:

• Add protection against adding the js twice (shouldn't generally be an issue since we add js during hook_page_build() rather than hook_init(), but best practice...)
• Tweak.
• Include /ajax/ in ajax callback path to comply with Drupal standard. Menu cache will need to be cleared when applying this update.
• Updated readme.
• #2209001 by greggles: Make watchdogging of success optional.
• Removed check_markup() before saving current_timezone js setting based on https://drupal.org/comment/8424707#comment-8424707
• Add another @todo, and adjust admin settings wording.
• Add @todo info.
• Remove unecessary access callback.
• #2136063 by greggles: Gracefully handle cases where timezone was attempted to be detected for non-authenticated users.
• #2120343 by ducdebreme: Fixed Timezone not set, if site runs not under a base_url() other then '/'.
• #2065195 by amcconnell: Registration form doesn't select the detected timezone
• #2026153 by milesw: Automatically keep user's timezone updated.
• Some changes to jstz.js version 1.0.5

I thought I'd include it here so you could edit the release node in case you'd like it to be more specific about the changes.