Add Burgers MPI solver link in PDE solver README
Add Burgers MPI solver link in PDE solver README
sourceryinstitute/opencoarrays,sourceryinstitute/opencoarrays,jerryd/opencoarrays,jerryd/opencoarrays,zbeekman/opencoarrays,zbeekman/opencoarrays,zbeekman/opencoarrays,sourceryinstitute/opencoarrays,jerryd/opencoarrays