message: using right app name in demo
diff: @@ -48,7 +48,7 @@ acknowledge via [this paper](http://arxiv.org/abs/1405.4040).*
  - Download
  [magnetic-512-volume.tar.bz2](http://www.sdvis.org/ospray/download/demos/MagneticReconnection/magnetic-512-volume.tar.bz2).
  - Run via\
  - `./ospExampleViewerSg magnetic-512-volume.osp`
  + `./ospExampleViewer magnetic-512-volume.osp`
  "FIU" Ground Water Simulation
  