Add section about VGA port.
Rewrote some section of the VGA.
Remove some of my stupidity
Update discussion.tex
Write about scalability (Webscale?)
Add todo
Put component section last in pcb chapter
Remove troubleshooting from pcb section
Add troubleshooting to discussion instead
Remove usb schematic and add short mention of ESD
Rewrite start of 'physical implementation'
Make comments changes
Add pdf of vga solution
Add figure for the VGA solution.
Fix mnerge conflict
Fix merge conflict
Merge pull request #54 from dmpro2014/VGA-redundancy

Add section about VGA port.
add section about SRAM
Add citation and correct some words
Fix typos