New method for basic display to print an end message

app_customer.py

@@ -60,4 +60,4 @@ while running:
     else:
         print('Action', action, 'not implemented yet.')
 
-print('End')
+display.end()

app_dispatcher.py

@@ -16,4 +16,4 @@ for r in rows:
         print(r)
 print('Application not implemented yet')
 
-print('End')
+display.end()

app_product.py

@@ -33,4 +33,4 @@ while running:
     else:
         print('Action', action, 'not implemented yet.')
 
-print('End')
+display.end()

basic_display.py

@@ -14,6 +14,11 @@ class BasicDisplay():
     def error(self, *message):
         print('ERROR :', *message)
 
+    def end(self):
+        """Display endline before closing app"""
+        bar = '-' * 5
+        print('+', bar, 'end', bar, '+')
+
     def product(self, p):
         print(p.id ,':', p.name)