Progress report 2 initial code push.

Added cpu2.v, which implements BNE and BEQ. Also corrected error in control bits for LW instruction.

Added modules2.txt file to allow separate compilation of code for projects 1 and 2.

input2.hex file includes code to execute for project 2.

Updated Project 2 write-up to include the new code (can't guarantee I didn't screw up the formatting, though). Did not update diagram or output screenshots, or output plaintext. Output should be done twice, first as-is, and again with the two DataMem values swapped in the CPU module, which will require recompilation.