Fix csv writing in windows for sensitivity analysis
Fix csv writing in windows for sensitivity analysis

using 'wb' when opening csv file prevents empty lines from being written
in .csv file on the windows platform

nickvandewiele/RMG-Py,chatelak/RMG-Py,nyee/RMG-Py,pierrelb/RMG-Py,pierrelb/RMG-Py,chatelak/RMG-Py,nyee/RMG-Py,nickvandewiele/RMG-Py