FMS sim, trigger phi depdence and gain non-linearity

 This gives an update on some recent work with PSU's local FMS sim.

Included are some misc investigations, as well as a look into how nearby particles effect board some triggers, and a first guess for a gain non-linearity function.

More info on fit functions found here:
https://drupal.star.bnl.gov/STAR/blog/bsumma/parameterized-fit-fuctions-non-linearity-w-radiation-damage

/////////////////////////////////September 14 2017

Adding SmallEShapesLin.pdf to show distributions for small cell shapes