Updated to XCode 4 project
Fixed issue with devices that are both an input and an output
added note about OS X 10.7 Lion
Updated note about Mac OS 10.7 Lion
cleaned up some missing defaults in switch statements
Upgraded to XCode 3.2 project format
Updated README.md to include instructions for installing dependency for command line tools. Also made a few tweaks for Mountain Lion support and for ignoring user files generated by latest version of Xcode.
Minor tweak to project to build for 32 & 64 bit.
Merge pull request #1 from brentj84062/master

A few minor tweaks from Brentj84062.