Finished up part 4. Closes #5

..* Simplified the register code for the counters.
..* Mapped the appropriate bits of the counters to the output LEDs.
..* Added the output LEDs to the entity description.

..* Added an additional frame with multiple different words in it.

..* Added the output LEDs to the entity description.
..* Added the output LEDs to the MP2_scanner entity description.
..* Added the appropriate I/O mapping for the output LEDs to the MP2_scanner instantiation.

..* Added the output LEDs to the address_swap_module_8 entity description.
..* Added the appropriate I/O mapping for the output LEDs to the address_swap_module_8 instantiation.
..* Commented out the LED debug code.

..* Added the counters the the waveform output.

..* Copied the appropriate files to the part4_files/ folder.