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.
yes it is.
@psychocoderHPC will that be done automatically later on, e.g. the `value_identifier` have a std value anyway?