Rc-externals notes

Commands to run the rc-externals repository demonstration.

 git clone https://www.github.com/JeffersonLab/rc-externals                      
 cd rc-externals                                                                 
 ./run_externals.sh                                                              
 ./make_grid                                                                     
 test_grid.inp, 6.4, 3.0, 3.0, 1.0, 14.0, 16.0, 1.0                            
 cat input/grids/test_grid.inp                                                    
 cat input/externals/test.inp                                                    
 cat input/targets/kpp_shms_488.targ                                             
 ./externals_2017                                                                
 cat output/externals/test.out                                                   
 cat outout/externals/test_details.out                                           
 ./make_rc_dat                                                                   
 test.out, test.dat                                                            
 cat output/rad-corr-data/test.dat