Cherry conveyor and stepper test

Cherry conveyor and stepper test
Added lemon vendor and stirrer

Signed-off-by: Ian Dickinson <ian@d1ckinson.com>
Merge branch 'master' of https://github.com/IanDickinson/BarBot

Add lemon vendor and stirrer code
Merge https://github.com/NottingHack/BarBot
Add platform ATtiny85 code
V0.3 - Added diagnostics mode and over-ride, updated glass detetection range to better suit cocktail glass
van hire quotes
split schema and test data; add more ingredients & cocktails; example dispenser config
rename for sanity
add features document
change ineffective markdown formatting
modifiyed CO2 dispenser size following Michael's work
add cherry and lemon dispensers
added umbrella dropper
add query to list cocktails which can be made
beginnings of a primitive web interface
consistent abbreviations between queries
added readme
completed new diagrams
added file for plywood cutting guide