lammps.1: add options block

0661a800 · Christoph Junghans · bd1e89ac · 0661a800
Commit 0661a800 authored Aug 24, 2018 by Christoph Junghans
--- a/doc/lammps.1
+++ b/doc/lammps.1
@@ -24,6 +24,10 @@ atomic, meso, or continuum scale.

 See http://lammps.sandia.gov/ for documentation.

+.SH OPTIONS
+See https://lammps.sandia.gov/doc/Run_options.html for details on
+command-line options.
+
 .SH COPYRIGHT 
 © 2003--2018 Sandia Corporation