Add psutil to list of dependencies for memory profiling
Add psutil to list of dependencies for memory profiling

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