Changed readinglist2pocket script to only add read items and to add a Pocket tag for 'reading_list'

Pocket's use of tags allows us to specifically tag items as coming from this script (IFTTT does a similar thing). Added this.

Also changed it to only add unread items from ReadingListReader.
Fix for odd error where certain bookmarks in the plist file didn't have the 'ReadingListNonSync' entries.

Used a tenerary operator for the archived and fetched variable assignments to fix unexpected errors.
Basic script leveraging the ReadingListLib script to dump contents of Reading List to CSV.

Very basic, no-frills script. For folks like me with a billion Reading List entries (ok, 583 to be exact); running this script then Clear All on the reading list resets my list to 0 without losing those items.
Merge pull request #8 from samuelkordik/master

Small adjustments to the Pocket script and bug fix for the ReadingListLib script.