Added warning about outstanding release.

Author: JStumpp

README.md

@@ -9,6 +9,7 @@ Pretty error page for Spring Boot that helps you debug your web application in t
 ![image](img/screenshot.png)
 
 ## Dependency
+WARNING: NOT YET ON MAVEN CENTRAL, PLEASE STAY TUNED, WILL BE RELEASED SOON.
 ### Maven
 ```xml
 <dependency>
@@ -66,4 +67,4 @@ public class DefaultErrorController implements ErrorController {
 
 ## Credits:
 
-By [jstumpp](https://github.com/jstumpp/). Based on [jooby/whoops](https://github.com/jooby-project/jooby/tree/master/modules/jooby-whoops) and [filp/whoops](http://filp.github.io/whoops/).
+By [jstumpp](https://github.com/jstumpp/). Based on [jooby/whoops](https://github.com/jooby-project/jooby/tree/master/modules/jooby-whoops) and [filp/whoops](http://filp.github.io/whoops/).