Add mapping logic, refactor stuff

app/include/sensor/Sensor.h

@@ -1,15 +1,18 @@
 #ifndef SENSOR_H_
 #define SENSOR_H_
 
-#include <iostream>
+#include <Printable.h>
 
-class Sensor {
+class Sensor : public Printable {
 public:
   // Read the current value
   virtual int value() = 0;
-  // Name for displaying. Should be descriptive, e.g. "GPU" or the label from
-  // libsensors.
-  virtual std::string name() = 0;
+
+  virtual int max() const;
+  virtual void max(int value);
+
+protected:
+  int mMax = 0;
 };
 
 #endif // SENSOR_H_