changed firstproject config

Author: Mark

src/test/java/com/arangodb/example/FirstProject.java

@@ -14,7 +14,7 @@
 public class FirstProject {
 
 	public static void main(final String[] args) {
-		final ArangoDB arangoDB = new ArangoDB.Builder().build();
+		final ArangoDB arangoDB = new ArangoDB.Builder().user("root").build();
 
 		// create database
 		final String dbName = "mydb";