First version of the light and vibration sensors and the vibration actuators
Added a relative orientation field to class Component  and updated classes LightSensor, LightSource and LightSourceFromAbove.

Added a test directory with a program to test the light sensors and actuators.

Add a method to classes LightSensor and LightSourceFromAbove to update their absolute positions.
Corrected a bug in the light model: the result of the hyperbolic function has to be scaled.

tanh(x) => (1 - tanh (x) ) / 2
Delete test_light

this is a binary file. it was committed by mistake
Corrected a IDE specific comment.
Corrected an IDE specific comment.

Added a method to return the absolute orientation.
Added a function to write a light intensity map.
Merge branch 'vibe-heat' of https://github.com/plsm/assisi-playground into vibe-heat

Hitler merge?!
Delete VibrationActuator.cpp
Delete VibrationActuator.h
Delete VibrationActuator.hpp
Delete VibrationSensor.cpp
Delete VibrationSensor.h
Delete VibrationSensor.hpp
Working on bee model.
Created cmake file
Merge branch 'light' of https://github.com/plsm/assisi-playground into light
Delete Makefile
Corrected paths in CMakeLists.txt
Merge branch 'light' of https://github.com/plsm/assisi-playground into light