Fixed bug with trapezoid integration of error
made julia folder and move files to keep things clean
Lookup table and function for Gauss Quadrature.  First attempt. Tests appear to work.
Rearranged refinement function to do both func and derivative at same time.  Add rate annotation to error plots.  Finished H1 error
Added permutation of gauss pts because the lookup table isn't order
changed to gauss_quadrature for error integration