Merge pull request #16 from SignalK/master

Bring through headers etc
Merge pull request #1 from SignalK/gh-pages

Merge pull request #16 from SignalK/master
Merge pull request #3 from SignalK/master

update to head
Added sensors, design data, and anchor data
Merge pull request #21 from rob42/master

Added sensors, design data, and anchor data