op code added, alu rewrote
Fix-compile-bug
Add-Pins
Fix-Pins
add debug code
apply new instruction system
add the jmp family instruction
Merge branch 'master' of https://github.com/mad4alcohol/CPU_Exercise into mad4alcohol-master

Conflicts:
	op_codes.md
	src/decoder_2_to_4.vhd
	src/decoder_unit.vhd
	src/exe_unit.vhd
	src/exp_cpu.vhd
	src/exp_cpu_components.vhd
	src/instru_fetch.vhd
	src/mux_4_to_1.vhd
	src/regfile.vhd
made compilable
.
resolve encoding issues
update readme
pull-from-mad4alcohol-20130610
Fix-readme-and-fix-merge
Fix-readme-and-del-trash
remove-trash
Merge pull request #5 from brickgao/Dev

Dev