Add parts-breakup/overview of hdmi.
Add notice on HDMI, DVI-I and VGA simmilarities.
Add power picture
Rewrite solution power section
Describe the video-data-fetching-logic.
Add the serializer to the hdmi-parts-breakdown.
Describe the output-part of the HDMI-unit.
HDMI: Clarify the pausing of the counter when fifo is full.
Write USB with caps
HDMI: Add todo for explaining serializers.
Correct typos
Add a beginning for LSU.
Replace the word PCB with clock
Add small addition about power structure
Merge pull request #45 from dmpro2014/pcb-hacks-fix

Replace the word PCB with clock
rewrite for barrel select component
update for barrel selector
Color the gpu
Merge pull request #48 from dmpro2014/gpu_data_flow_overview

Color the gpu
Merge pull request #47 from dmpro2014/processor_cores

update for barrel selector