added MCP230xx module
now compatible with MCP23008 & MCP23017
removed fonction pUpOn & pUpOff renamed _setPullup to pullup
removed function setIn & setOut
Added lcd device (Adafruit LCD Backpack, HD44780 & MCP23017)
small demo snippet for adafruit lcd shield
Merge branch 'device/MCP230xx'
updated readme
updated package.json to v0.0.3