Update readme and plugin contributors
Fix options reset SQL. Change 'delete settings' language.

* Fixes #30
* "Reset customizer settings" is a more accurate description of what happens than "Delete Styles settings"
* Fix reset notice not appearing on settings page. Validation hook doesn't appear to occur on same page load as admin_notices.
Include auto-install notice for @zulfnore's TwentyFourteen add-on.

Resolves #46.

Sorry for the long delay, @zulfnore.
Update readme
Merge branch 'r/1.1.8'