Update to libWiringPi v2

[nekuz0r]

• Update libWiringPi to v2 (deps folder)
• Move values check into c++ functions
• Update documentation
• exports.js dynamically exports functions from c++ module
• Add support for Physical numbering scheme in setup function
• Reorganise and add some libWiringPi constants
• Added functions: wiringPiSetupPhys, pinModeAlt, analogRead, analogWrite, wpiPinToGpio, physPinToGpio, setPadDrive, getAlt, digitalWriteByte, pwmSetMode, gpioClockSet, mcp23s17Setup, ...
• Update package.json (version, contributors)
• Add a lot of comments in source code
• Update examples
• Add all libWiringPi extensions header
• Add support for drcSerial
• Add support for max5322
• Add support for mcp23s17
• Add support for mcp23s08
• Add support for mcp3002
• Add support for mcp3004
• Add support for mcp3422
• Add support for mcp4802
• Add support for mcp23008
• Add support for mcp23016
• Add support for mcp23017
• Add support for pcf8574
• Add support for pcf8591
• Add support for softPWM
• Add support for softServo
• Add support for softTone
• Add support for sr595
• Add support for wiringPiSPI
• Add support for wiringPiSerial (wiringPiSerialPrintf not implemented yet)
• Add support for wiringPiShift

[nekuz0r]

This update breaks some user code due to the reorganisation of the wiringPi constants. Maybe will you prefer i put back the previous definitions in exports.js for backward compatibilty ?

Impacted constants are:

modes: {
    INPUT: INPUT,
    OUTPUT: OUTPUT,
    PWM_OUTPUT: PWM_OUTPUT
  },
  pull: {
      OFF: 0,
      DOWN: 1,
      UP: 2
  },

[nekuz0r]

I added backward compatibility constants, so it will not breaks user code :)

[spikeheap]

Great work @nekuz0r. I'd almost given up on wiringPi2 support in node and set about updating this library, but you've done the work for me :). I'm not a maintainer, but this looks good to me.

[nekuz0r]

@spikeheap Thank you, i hope @eugeneware will accept the pull request soon. In the mean time, you can install the updated version with npm (npm install git+https://github.com/nekuz0r/wiring-pi.git) If @eugeneware no longer has time to maintain this package, i would be glad to be a maintainer of it.

[spikeheap]

Thanks @nekuz0r, I'll give it a go while we're waiting for the pull request and see how it goes.

[eugeneware]

Sorry guys - have been on vacation for a few weeks (yes it's nice here in Thailand :-)

This is excellent work. I'm releasing it as 1.0.0 just in case there are any incompatibilities that show up.