point to the developer docu

Author: rbri

README.md

@@ -252,24 +252,10 @@ This project is licensed under the Apache 2.0 License
 
 ## Development
 
-### useful mvn command lines
-setup as or refresh the eclipse project
+Checkout these pages on our website for detailed hints about starting with the development:
+ * [HtmlUnit Development](https://www.htmlunit.org/development.html) 
+ * [Coding Conventions](https://www.htmlunit.org/codingConventions.html)
 
-```
-mvn eclipse:eclipse -DdownloadSources=true
-```
-
-run the whole core test suite (no huge tests, no libary tests)
-
-```
-mvn test -U -P without-library-and-huge-tests -Dgpg.skip -Djava.awt.headless=true
-```
-
-check dependencies for known security problems
-
-```
-mvn dependency-check:check
-```
 
 
 ## Some insights