Updated xml2js parsing method

* No longer need a Parser() object since xml2js v0.2.3 https://github.com/Leonidas-from-XIV/node-xml2js
* Corrected version param back to 2011-08-01 (Issue #22)
* Updated README (Removed dead link & Added sample output)
* Bumped xml2js dependency to >=0.2.3 & node-apac to 0.0.13

@dmcquay , have a look and if everything looks good I'll merge it.