Pin define and clock config

Add further information about pin definition and clock routing
Fix issue #112 and clean up dt-blob documentation.
Typo
Fix nested lists

by inserting a couple of spaces where needed
Merge pull request #123 from XECDesign/dt-blob

Fix issue #112 and clean up dt-blob documentation.
Change the rpiboot instructions for make install
Added CMIO and CMCDA design data
Fix link
Add CMCDA schematic as a standalone file. Fixes #113
Update page description
Create LICENCE.md

Add Fritzing credit