Issue #9: Added public, readonly property to access underlying IOKit object for a port.
Merge branch 'master' of https://github.com/armadsen/ORSSerialPort
Fixed minor typo in example code in README.
Added appledoc documentation comments.
Update ORSSerialPort.m

ORSSerialPort +(void)initialize called multiple times. Fixed this by using dispatch_once(). 

Reference:http://stackoverflow.com/questions/14110396/initialize-called-more-than-once
Merge pull request #13 from shagru/master

Merged pull request to fix bugs due to +[ORSSerialPort initialize] being called multiple times.
Issue #14: Removed garbage 'B9600' line from -sendData:
Updates from upstream