Add npm scripts for starting and testing
update readme
Beginnings of feeder, a module that subscribes to a feed and emits events when posts are added or updated

Simple polling is supported for now, but pubsubhubbub and rsscloud will be supported for more realtime updates
Add feeder tests
Make meta event only fire when the feed's metadata actually changes
Add a startDate option to feeder to ignore posts before that date and don't store all of the posts in memory.
Test startDate option
Clean up
Load authenticated user from mongo automatically

Turns out we can't just store it in the session since it will be serialized as JSON and will no longer be a model object
Beginnings of subscription API
clean up parseTags and handle non-string values
Add more documentation
Add more feed related properties to the data model