Diagram and superdrafty text
Add data usb input circuitry picture
Merge branch 'master' into pcb-input

Conflicts:
	report/pcb/pcb.tex
Finish merging master into branch
 register directory diagram and text
Registers text and masking diagram
Missed masking diagram
small fixes
Mention LSU lines
Use Read/write in table
Rewrite the bus section
Add mask enable to diagram
Add info about MCU.
Add introduction to the clock section.
fix figure
rewrote some of the backup solution for the oscillator.
Merge pull request #30 from dmpro2014/pcb-input

Pcb input
Fix typos and remove redundent word.
Respond to feedback
Processor cores start