Added a new class to control servo motors
Added example to control a renacuajoBOT
Added a variables type ENUM for the position of the sensor,servos and the color of the line
Added a class type Servo for the control of servo
Added a new type of sensor compatible with CNY70
Added new method to follo lines
Example with follower lines
Added new LDR sensor
Merge pull request #2 from darkomen/master

Added to control a robot with servos and sensor compatible with CNY70