Potfit tutorial (solutions/hints see solution directory)

1) Download potfit (either clone git or packed binary)

2) Adjust Makefile.
   If you're using mkl, you might need to source the mklvars.sh file.

3) Compile appropriate potfit target.

4) Use potfit to recreate analytical potentials for the attached reference data.

4a) Create analytical starting potential with makeapot
4b) Create parameter file template with potfit_setup
4c) Adjust parameter file
4d) Run potfit

5) Use potfit to create an interpolated potential.

Things to toy around with: Simulated annealing/Differential evolution.
