adding namespaces to all files to bring it up to php5.3 standards
adding composer file so this repository can be used by composer
fixing namespace for manager class
fixing more class names to match psr-0 standards
fixing exception usage
fixing bug where parser is not defined
fixing typo
adding namespace for SimpleXML objects
fixing case where item may exist
Merge pull request #1 from JJLai/master

Updating to php 5.3 namespaces and composer integration