title: How to import project or library to ios app in xcode 4.3
body: <p>I have downloaded <a href="https://github.com/netshade/Cocoa-Touch-Barcodes" rel="nofollow noreferrer">an iOS project</a> and would like to know how to import this into my app in xcode 4.3.  Do I have to copy over every single .h and .m file into my project? or can I just import it as a library type thing.  And if so, how?</p>