highlight code block (#7)

Author: Haroenv

README.md

@@ -13,7 +13,7 @@ To do a render cycle call the #render method with the path to your entry point s
 Example
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-```
+```java
 JReact react = new JReact();
 react.addRequirePath("./src");
 react.addRequirePath("./src/node_modules");