-# and finally execute the actual SonarQube analysis
-sonar-scanner -Dsonar.host.url=https://nemo.sonarqube.org -Dsonar.login=7f3a6edf2fc5fcfa22c3fb95ce13597dc4b1fb15
+# and finally execute the actual SonarQube analysis (the SONAR_TOKEN is set from the travis web interface, to not expose it)
+sonar-scanner -Dsonar.host.url=https://nemo.sonarqube.org -Dsonar.login=$SONAR_TOKEN