Assignment 4 added, finally

Finally remembered where to put the file, so this one is even more late
than the webCT one, which I actually started uploading before 12:00. Then gitHub took about 15 minutes to sync which is entirely my fault since I included some song files with my project. On that note, if you don't like my taste in music, feel free to add your own .mp3 songs to the songs folder!
Controls: A and D to drive, Space to fly, try and collect the lights,
and avoid the spiky balls!