Merge pull request #3 from carlosalberto/master

Specify bool retval for shouldTerminateAfterLastWindowClosed.
Add some new clases for the foundation framework.

Basic set of method/properties for NSArray,
NSDictionary, NSEnumerator, NSFileManager,
and NSProcessInfo.

(Left out some of the not so common methods/properties,
as well as memebers that we may not support at the moment,
i.e. methods returning unhandled structs, or pointers to
pointers).