bug fixes

Fix: missing constant in pinModeCheck
Fix: missing constant PI_MODEL_CM
Add: serialPrintf (alias to serialPuts)
update version number to 1.1.1
Merge pull request #7 from nekuz0r/incoming

v1.1.1
Preparing wiring-pi 2.0.0

- Split the source code (based on libWiringPi source code hierarchy)
- ADD: Implement I2C functions
- ADD: Aliasing serialPrintf to serialPuts
- FIX: missing constants in pinMode check
- ADD: missing constant PI_MODEL_COMPUTE
- ADD: wiringPiISR support (experimental)
- UPD: Exports constants from C++ (ReadOnly | DontDelete)
- UPD: Exports setup function from C++
- UPD: setup function no longer accepts calling without mode defined
(breaks backward compatibility)
- ADD: Better types and allowed values check
- ADD: Better error messages
- UPD: wiringPiSPIDataRW now takes two parameters, a node buffer as
second parameter (instead of a string as second and length as third)
- UPD: README.md (move documentation to DOCUMENTATION.md)
- UPD: Documentation
- UPD: Package.json version and contributors section
- ADD: version history file (CHANGELOG.md)
- DEL: Backward compatibility constants
update documentation
update documentation
Preparing wiring-pi 2.0.0

- UPD: documentation
- UPD: install script (add gpio utility installation, make check, fix
update)
- ADD: drcSerial extension
- UPD: examples
update install script
Remove c++11 requirement
Add all remaining extensions :)
fix some bugs
Optimizing compilation time
fix gpio compilation and installation
fix typos :/
typo again ...
wiringPiISR callback remove pin

Useless since callback is associated with interrupt on a given pin
update changelog
fix typo in changelog
devLib support
update changelog