Make the builder example complete

Author: kamranahmedse

README.md

@@ -313,16 +313,37 @@ As you can see; the number of constructor parameters can quickly get out of hand
 
 **Programmatic Example**
 
-The sane alternative is to use the builder pattern.
+The sane alternative is to use the builder pattern. First of all we have our burger that we want to make
 
 ```php
-class BurgerBuilder {
+class Burger {
  protected $size;
 
- protected $cheeze = true;
+ protected $cheeze = false;
  protected $pepperoni = false;
  protected $lettuce = false;
  protected $tomato = false;
+ 
+ public function __construct(BurgerBuilder $builder) {
+ $this->size = $builder->size;
+ $this->cheeze = $builder;
+ $this->pepperoni = $builder->pepperoni;
+ $this->lettuce = $builder->lettuce;
+ $this->tomato = $builder->tomato;
+ }
+}
+```
+
+And then we have the builder
+
+```php
+class BurgerBuilder {
+ public $size;
+
+ public $cheeze = false;
+ public $pepperoni = false;
+ public $lettuce = false;
+ public $tomato = false;
 
  public function __construct(int $size) {
  $this->size = $size;
@@ -338,14 +359,18 @@ class BurgerBuilder {
  return $this;
  }
 
+ public function addCheeze() {
+ $this->cheeze = true;
+ return $this;
+ }
+ 
  public function addTomato() {
  $this->tomato = true;
  return $this;
  }
 
  public function build() : Burger {
- // creational logic
- return $burger;
+ return new Burger($this);
  }
 }
 ```