Updated README file

README.md

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+# spring-restful-exception-handler
+### An annotation for the Spring framework to handle HTTP responses for custom exceptions.
+
+## How to use spring-restful-exception-handler
+Under $PROJECT/resources create a file called *error.template*. Inside this file, place the formatted error template you want to return when a custom exception is thrown. If no custom template is given, the following default template will be used:
+    <?xml version="1.0" encoding="UTF-8"?>
+    <error>
+    %s
+    </error>
+Annotate the custom exception class with
+    @Exception(*httpStatus*, *contentType*)
+The defaults are
+    httpStatus = HttpStatus.INTERNAL_SERVER_ERROR
+    contentType = MediaType.APPLICATION_XML_VALUE
+Make sure to add *com.raychatter.common.annotation.AnnotationHandler* as a bean in your XML.
+And that's it!
+
+