Add pcb overview layout
Rename design for redundancy

To backup oriented design
Remove physical overview part

It'll be merged with the other one below
Fix opening of pdfs in makefile
Merge pull request #37 from dmpro2014/mf-up

Fix opening of pdfs in makefile
Add overview design to backup solution
Merge pull request #35 from dmpro2014/pcb-overview

Pcb overview
Add part about PCB problems and workarounds
splelling
Bigger picture
Add clock fix picture