A rudimentary objC wrapper for libid3 that works with OSX and IOS

For OSX, it is compiles to an embeddable framework that provides the main class DDID3Tag used to read or write or update a tag.

The framework comes with a separate unit testing bundle that assures minimal functionality: Reading, writing, cloning, celeting of a tag.

For IOS it compiles to a static library that needs libz, libiconv and libstdc++ (sorry for that dependency. I havent changed it to libc++ so far)

In the end it provides the same interface as the OSX framework. Namely the class DDID3Tag used to read or write or update a tag.

The IOS lib comes with a demo app that runs the same unit tests as the OSX version and also displays a tag content inside a UITextView.