[Halla12_software] ec_solid_gemc as an example

[Zhiwen Zhao]

Dear All

We talked about showing an example for using the external parameter to 
define a detector

Here is "ec_solid_gemc" as an example
https://jlabsvn.jlab.org/svnroot/solid/subsystem/ec/ec_solid_gemc/
The parameter file is
solid_PVDIS_ec_forwardangle__parameters_Original.txt
as shown on slide 14 of my talk a few weeks ago
http://hallaweb.jlab.org/12GeV/SoLID/download/software/talk/solid_software_zwzhao_20150326.pptx
http://hallaweb.jlab.org/12GeV/SoLID/download/software/talk/solid_software_zwzhao_20150326.pdf

see the "readme" file about how to use the example

Zhiwen