Merge Ionization into Dev to see changes

The code is compiling but once I try to run it, I am receiving a SegFault without much other comment. 
That happens when I use CUDA 5.5 or 6.0. If I use 6.5 it tells me that it cannot find a CUDA capable device.
well why not?
I am just not a fan of refactoring the general `getCharge()` trait to use two parameters. but that can be done later...