Added node_modules to a gitignore
Errors are thrown rather than returned now. Errors are no longer silent.
Fixed a couple of reverse logic issues.
Removed author from being output in the RSS feed (it remains in the ATOM feed).
Made updates to the channel image element so that it parses the W3C feed validator.
You can now pass in guid, otherwise the URL will be used instead so that it passes W3C feed validation.
Added the ability to add a 'content:encoded' element and namespace to support Flipboard RSS requirements.
Content element added to the atom output.
Implemented link rel='self' for both RSS and Atom (along with rel='alternate' for Atom).
Updated the regular expression pattern to allow for localhost:nnnn domains while on development machines.
You can now define a hub url for PubSubHubbub implementation.
Merge pull request #10 from smebberson/master

Updates to better pass the W3C validator, and other improvements