Update README.md

Author: stleary

README.md

@@ -85,9 +85,11 @@ gradlew clean build test
 # Notes
 
 **Recent directory structure change**
+
 _Due to a recent commit - [#515 Merge tests and pom and code](https://github.com/stleary/JSON-java/pull/515) - the structure of the project has changed from a flat directory containing all of the Java files to a directory structure that includes unit tests and several tools used to build the project jar and run the unit tests. If you have difficulty using the new structure, please open an issue so we can work through it._
 
 **Implementation notes**
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 Numeric types in this package comply with
 [ECMA-404: The JSON Data Interchange Format](http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf) and
 [RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format](https://tools.ietf.org/html/rfc8259#section-6).