Button by BREVIG http://alexanderbrevig.com

Use a button connected to digital pin 12. Digital pin 12 is used as input and connected to a button When the button is pressed, the Wiring board LED turn ON, the LED turns OFF when the button is released.

This example simulates the switch example

#include <Button.h>

/*
  Wire like this:
  GND -----/ button ------ pin 12
*/
Button button = Button(12,BUTTON_PULLUP_INTERNAL);

void setup()
{
  pinMode(48,OUTPUT);
}

void loop()
{
  if (button.isPressed())
  {
    digitalWrite(48,HIGH);
  }
  else
  {
    digitalWrite(48,LOW);
  }
}