add RUNSPEC sections to the GRDECL files

actually these should be moved to the .DATA files, but since they do
not exist, let's add them to the grid definition files in the
mean-time.
Merge pull request #123 from andlaus/add_RUNSPEC_to_GRDECL_files

add RUNSPEC sections to the GRDECL files
Removed RUNSPEC section from input files.
Merge pull request #124 from joakim-hove/remove-RUNSPEC

Removed RUNSPEC section from input files.