DOC: Added Debian help in README_SETUP.md.

README_SETUP.md

@@ -10,6 +10,12 @@
 * >=Screen 4.01
 * >=MySQL 5.5 (better >=5.6) or >=MariaDB 10.1
 
+### Install the requirements on Debian
+On Debian, the required packages can be installed with:
+
+    apt-get install git make mariadb-server maven openjdk-8-jdk-headless \
+      python3-pip screen
+
 ## System
 
 * >=Linux 4.0.0, x86\_64, e.g. Ubuntu 14.04.1