Add slf4j as logging library with log4j2 as backend implementation.
buil.xml: Create jars without version in name by default
Extended interface for feeding sensors, adapted and extended sensor implementations

Sensors now provide channel informations including name, unit, and valid data range.
Add Inga devices to platform, add button sensor
Added getDeviceNames() function to Platform
Added "inga" platform to Defaults
Moved sensors and other devices to platform.devices sub-package
Implemented Fifo modes for ADXL345
NullSensorSource now returns 0
ATMega1284p: Added missing external interrupts INT0..2
devices/Button: Button implementation fix

* Now return value is updated
* isActiveLow parameter is respected
Merge pull request #2 from ejoerns/pull-req/button-fix

Fix INGA Button simulation
[inga] Correct LEDs for INGA platfrom

The INGA platform has exactly two controller-driven LEDs:
A green one and an orange one.
Merge pull request #3 from ejoerns/pull-req/inga-leds

[inga] Correct LEDs for INGA platfrom
Added .gitignore for ./dist directory
[ant] Fixed build.xml
targets "run" and "test" will now work as expected
[Travis] added .travis.yml for automated testing