Correct '{}' syntax to '{0}' in strings to accomodate older versions of python.
Correct '{}' syntax to '{0}' in strings to accomodate older versions of python.

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