all index.md files renamed to README.md for more compatibility with github

prototype/README.md

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+---
+layout: pattern
+title: Prototype
+folder: prototype
+permalink: /patterns/prototype/
+categories: Creational
+tags: 
+ - Java
+ - Gang Of Four
+ - Difficulty-Beginner
+---
+
+## Intent
+Specify the kinds of objects to create using a prototypical
+instance, and create new objects by copying this prototype.
+
+![alt text](./etc/prototype_1.png "Prototype")
+
+## Applicability
+Use the Prototype pattern when a system should be independent of how its products are created, composed and represented; and
+
+* when the classes to instantiate are specified at run-time, for example, by dynamic loading; or
+* to avoid building a class hierarchy of factories that parallels the class hierarchy of products; or
+* when instances of a class can have one of only a few different combinations of state. It may be more convenient to install a corresponding number of prototypes and clone them rather than instantiating the class manually, each time with the appropriate state
+
+## Real world examples
+
+* [java.lang.Object#clone()](http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone%28%29)
+
+## Credits
+
+* [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)