Updated image name at README.md

Signed-off-by: Vinicius Kwiecien Ruoso <[email protected]>

Author: Vinicius Kwiecien Ruoso

README.md

@@ -10,7 +10,7 @@ To run a Docker container customizing the different tools with your credentials
     -e JENKINS_USERNAME=jenkins \
     -e JENKINS_PASSWORD=jenkins \
     -e JENKINS_MASTER=http://jenkins:8080 \
-    techtraits/jenkins-slave
+    rancher/jenkins-slave
 
 ### Optional Environment Variables