run losscalculator in example

examples/example_cell/run_example_cell.sh

@@ -3,4 +3,4 @@ t='data/taxonomy_mapping.csv'
 e='data/exposure.csv'
 g='data/ground_motion_values.csv'
 m='data/intensity_measure_map.csv'
-python3 ../../losscalculator/damage_calculator.py -f $f -m $m -g $g -e $e -t $t -o
+losscalculator damage -f $f -m $m -g $g -e $e -t $t -w