old_contents: // add_test.js
  
  describe('Testing addition', function(){
  	it('should add', function(){
  		expect(add(2,4)).toBe(6);
  		expect(add(2,4)).not.toBe(2);
  	});
  });
new_contents: // add_test.js
  
  describe('Addition', function(){
  	it('should add', function(){
  		expect(add(2,4)).toBe(6);
  		expect(add(2,4)).not.toBe(2);
  	});
  });
subject: Update examples