Changed version in README

Author: jnioche

README.md

@@ -13,7 +13,7 @@ NOTE: These instructions assume that you have [Apache Maven](https://maven.apach
 
 The easiest way to get started is to generate a brand new StormCrawler-based project using \: 
 
-`mvn archetype:generate -DarchetypeGroupId=com.digitalpebble.stormcrawler -DarchetypeArtifactId=storm-crawler-archetype -DarchetypeVersion=1.12.1`
+`mvn archetype:generate -DarchetypeGroupId=com.digitalpebble.stormcrawler -DarchetypeArtifactId=storm-crawler-archetype -DarchetypeVersion=1.13`
 
 You'll be asked to enter a groupId (e.g. com.mycompany.crawler), an artefactId (e.g. stormcrawler), a version and package name.