Include AR marker & detector inside of code.
NyARToolkit is in "code" directory, and pattern files are in "data" directory.

You don't need to fix the path every time you pull any more.
Changed method of drawing 3D objects from Saito OBJLoader to Proccesing native method (improved #3).
Now you don't need OBJLoader package.
Changed how to manage drone.
Now, we use "Drone" class which extends original "ARDrone" class, and I think it makes controlling drone easier.
(includes #5)