update README.md to recommend Tomcat 9.x + link to configuration needed to run JSPWiki on Tomcat 8.x
@@ -35,9 +35,10 @@ Okay, so you wanna Wiki? You'll need the following things:
REQUIRED:
-* A JSP engine that supports Servlet API 3.1. We recommend Tomcat from
- http://tomcat.apache.org/ for a really easy installation.
- Tomcat 8.x or later is supported.
+* A JSP engine that supports Servlet API 3.1. We recommend [Apache Tomcat](http://tomcat.apache.org/)
+ for a really easy installation. Tomcat 9.x or later is recommended, although Tomcat 8.x
+ is supported too; see [additional configuration](https://jspwiki-wiki.apache.org/Wiki.jsp?page=Getting%20Started#section-Getting+Started-Tomcat8.x)
+ that must be set up in order to run JSPWiki on Tomcat 8.x.
* Some previous administration experience... If you've ever installed
Apache or any other web server, you should be pretty well off.
