Fixed for ARC
Merge pull request #15 from larsw/ARC

Fixed for ARC
Use htmlReadMemory instead as libxml2 can crash trying get the size of NSData itself
Free variable when finished with it.
Add a description to the node so it can be logged more easily.
Merge branch 'master' of github.com:PadraigK/Objective-C-HMTL-Parser