Minor fixes (warnings)
Renamed mapper example program file
Fixed mapper example compile script
Added tests and examples (folders) to makefile
Major update in the main.cpp file of the mapper example to support Q-Learning with command-line arguments
Created a BehaviorTreeAgent class
Small compil. fix
Use BehaviorTreeAgent in b-tree example
Renamed b-tree for osc_bt
Renamed main.cpp for osc_bt.cpp in osc_bt example
Updated build procedure in osc_bt