refactored displays

FlippR-Driver/include/output/items/Solenoid.h

@@ -8,7 +8,6 @@
 #ifndef _SRC_OUTPUT_ISOLENOID_H_
 #define _SRC_OUTPUT_ISOLENOID_H_
 
-#include "output/items/Item.h"
 
 namespace flippR_driver
 {
@@ -20,8 +19,7 @@ namespace items
 class Solenoid
 {
 public:
-  ~Solenoid()
-  {};
+  virtual ~Solenoid() = default;
 
   virtual void trigger() = 0;
 };