Create README.md

Author: NadavMozeson

README.md

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+Implementations of Design Patterns in Java
+
+**Creational patterns:** Singleton, Factory Method, Abstract Factory, Builder, Prototype
+**Structural patterns** Delegator, Adapter, Proxy, Bridge, Decorator
+**Behavioral patterns** Iterator, Memento, State, Chain of Responsibility, Visitor, Mediator, Strategy, Callback, Observer
+**Concurrency patterns** Adapter in concurrency, Observer (Listener), Thread Pool, Thread-safe singleton, Double-Checked Lock-DCL, Read/Write Lock, Leader/Followers