Added Builder Pattern to Suite

Creational.playground/Pages/Builder.xcplaygroundpage/Contents.swift

@@ -0,0 +1,42 @@
+//: [Previous](@previous)
+
+import Foundation
+
+class StudentBuilder {
+    var firstName : String?
+    var lastName : String?
+    var age : Int?
+
+    init(buildClosure: (StudentBuilder) -> ()){
+        buildClosure(self)
+    }
+}
+
+struct Student  {
+    let firstName : String
+    let lastName : String
+    let age : Int
+
+    init?(builder: StudentBuilder) {
+        if let firstName = builder.firstName, let lastName = builder.lastName, let age = builder.age {
+            self.firstName = firstName
+            self.lastName = lastName
+            self.age = age
+        } else {
+            return nil
+        }
+    }
+}
+
+let studentBuilder = StudentBuilder{ builder in
+    builder.age = 10
+    builder.firstName = "Sebastian"
+    builder.lastName = "Boldt"
+}
+
+let student = Student(builder: studentBuilder)
+student?.lastName
+student?.firstName
+student?.age
+
+//: [Next](@next)

Creational.playground/contents.xcplayground

@@ -4,5 +4,6 @@
         <page name='Singleton'/>
         <page name='Prototype'/>
         <page name='Factory Method'/>
+        <page name='Builder'/>
     </pages>
 </playground>

README.md

@@ -23,8 +23,8 @@
 * ✅ Singleton
 * ✅ Prototype
 * ✅ Factory Method
+* ✅ Builder 
 * ❌ Abstract Factory
-* ❌ Builder
 
 
 ##Structural