Works on 1.5b8. Switch to POST request.
Only load CSS/JS on the /pages page.
More 1.5 API usage & PHP returns AJAX response for flash message.

PHP now sends back the Flash message as AJAX response.
Updated to use the 1.5 Request, Config, Log and Folder API.
Tweaked wording of flash message slightly.
Added more exception handling with messages.
Adds folder existence check before renaming anything.
Removes old redirection code (ajax only use).
Updates JS to exclusively use AJAX requests.
Adds Browser Support section to readme.
Updates dom with new links on reorder.
Changes directory layout into a GIT clone-able structure.
Adds GruntJS task runner.
Revises Readme
Fixes #2; Only pages that can be shown in the {{ nav }} tag are now actually sortable.

According to the Statamic Docs "Managing Content" section, only pages that are inside a folder show up inside the {{ nav }} tag, thus only those are now actually sortable.

Other pages —that wouldn't show up in {{ nav }}— are no longer sortable at all.
Bump to add-on version number in accordance to issue #2.
Merge branch 'master' with '1.5b'.
Prep for replacing master with 1.5 release add-on while moving 1.4.2 add-on onto a separate branch away from master.