[feed] Adding functionality to get json feeds. Stand alone for now so we don't have to send loads of data
[issue-5] Changing feed to use Rewrite API to avoid double queries
[issue-5] Some mods to the json endpoint and return values of feed
Some better filter options and better use of get_query_var
[issue-5] Whitelisting the output from the json
Merge pull request #17 from pkevan/master

Feeds for zoninator