add some minimal usage examples

swig/run_lua_example.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+cat > example.lua <<EOF
+require("lualammps")
+
+lmp = lualammps.lammps_open_no_mpi(0,nil,nil)
+ver = lualammps.lammps_version(lmp)
+
+print("LAMMPS version ", ver)
+lualammps.lammps_close(lmp )
+EOF
+
+lua example.lua

swig/run_perl_example.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+cat > example.pl <<EOF
+use pllammps;
+
+\$lmp = pllammps::lammps_open_no_mpi(0,undef,undef);
+\$ver = pllammps::lammps_version(\$lmp);
+
+print("LAMMPS version ",\$ver,"\n");
+pllammps::lammps_close(\$lmp)
+EOF
+
+PERL5LIB=$PWD:${PERL5LIB-PWD}
+
+export PERL5LIB
+
+perl example.pl

swig/run_python_example.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+cat > example.py <<EOF
+from pylammps import *
+
+lmp = lammps_open_no_mpi(0,None,None)
+ver = lammps_version(lmp)
+
+print("LAMMPS version ",ver)
+lammps_close(lmp)
+EOF
+
+PYTHONPATH=$PWD:${PYTHON_PATH-PWD}
+
+export PYTHON_PATH
+
+python example.py

swig/run_tcl_example.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+cat > example.tcl <<EOF
+load ./tcllammps.so
+
+set lmp [lammps_open_no_mpi 0 NULL NULL ]
+set ver [lammps_version \$lmp]
+
+puts "LAMMPS version \$ver"
+lammps_close \$lmp
+EOF
+
+tclsh example.tcl