Adding additional description to running the configuration

README.md

 # LMDZ-configurations
 
-One place for all LMDZ configurations.
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+One place for all LMDZ configurations.
+
+## Available configurations
+
+* [Zoom over ANT by Valentin W.](valentin/)
+
+## Simplified running of configurations
+
+The `run_valentin_configuration.sh` script simplifies running the configuration on JeanZay.
+Follow these steps:
+
+```sh
+# Once connected to JeanZay
+cd $STORE
+git clone https://gitlab.in2p3.fr/ipsl/projets/dynamico/awaca/lmdz-configurations.git
+cd lmdz-configurations
+# Download TUTORIAL_PROD and copy configuration files into $STORE/TUTORIAL_RROD directory
+./run_valentin_configuration 1
+# Install the LMDZ/XIOS etc. models (this is a batch job, wait until it finishes)
+./run_valentin_configuration 2
+# Initialise and create input data (this is a batch job, wait until it finishes)
+./run_valentin_configuration 3
+# Prepare ERA data
+./run_valentin_configuration 4
+# Run the simulation (this is a batch job)
+./run_valentin_configuration 5
+```