Austin branch

I have added the ability to copy files from multiple sectors. I am confident that my non deleted file copying works like a charm for both single and multi sector files. I am also confident that my deleted file copying works for one sector files. I am relatively confident that my deleted files copying works for multi sector files, but I haven't tested it yet. I may try to make an image with a deleted JPG or something to test.
This function just keeps checking the FAT to see if the current sector has been overwritten. If it hasn't, then it keeps grabbing the next sector and copying it. It returns the number of copied sectors just in case some or all of the file has already been overwritten. In that case I handle the file truncation in the writeToDisk() function.