Improved the plotting in average_beta.py, added units and better method for setting y and x axis limits
Improved the plotting in average_beta.py, added units and better method for setting y and x axis limits

hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,ruthfranklin/hande