Updates in preparation for 3.1.0 release (#1049)

* Updates in preparation for release.

Signed-off-by: Santiago Pericasgeertsen <santiago.pericasgeertsen@oracle.com>

* Changed Jenkins build steps and updated main pom.

Signed-off-by: Santiago Pericasgeertsen <santiago.pericasgeertsen@oracle.com>
diff --git a/jaxrs-spec/README.md b/jaxrs-spec/README.md
index 2c38dda..6dccecc 100644
--- a/jaxrs-spec/README.md
+++ b/jaxrs-spec/README.md
@@ -8,15 +8,15 @@
 
 Prerequisites:
 
-* JDK8+
-* Maven 3.0.3+
+* JDK 11+
+* Maven 3.6.3+
 
 Run the full build:
 
 `mvn install`
 
 Locate the html files:
-- target/generated-docs/RESTfulWebServices.html
+- target/generated-docs/spec.html
 
 Locate the PDF files:
-- target/generated-docs/RESTfulWebServices.pdf
+- target/generated-docs/spec.pdf