Compiler issues

I have downloaded and attempted to install Voronoi and required dependencies. I have noted a couple of minor things and then issues that have resulted in failure to compile Voronoi.

1. As of this writing, the build page (https://lanl.github.io/voronoi/docs/building/) returns a 404 error. I received build instructions separately.
2. It would be helpful for said build page to include instructions on installing HDF5; the instructions for petsc are great.

The error that causes the actual crash is:
grid.F90:1899.50:

grid%vertex_ids(i) - 1, zero, INSERT_VALUES, ierr); i
1
Error: Type mismatch in argument 'va' at (1); passed INTEGER(4) to REAL(8)

Start by checking the building page URL and the compiler diagnostic at grid.F90:1899, then compare the separately supplied build instructions with the reported HDF5 and PETSc setup. Done means the documented build path is available, HDF5 installation is covered, and the reported compilation failure is resolved or clearly diagnosed.

Written by the indexing model from the issue text.