Better test case for the isothermal gravity example

examples/IsothermalPotential/run.sh

@@ -4,7 +4,7 @@
 if [ ! -e Isothermal.hdf5 ]
 then
     echo "Generating initial conditions for the isothermal potential box example..."
-    python makeIC.py 1000 1
+    python makeIC.py 1000 0
 fi
 
 rm -rf Isothermal_*.hdf5