Unfinished loop work!

Almost have it working! not quite
Loop working! (the looping part anyway...)

- Proper looping has been achieved from start address to end address!
- Unfortunately, only the first address will work, the rest will say
DATA, but have the correct address printed. Still working on this
- Fixed BRA to move pointer based on displacement
- Fixed NOP no extra blank line
Merge pull request #51 from cgoodling/origin/abby

Looping partially finished