Added CLI option, specifying number of generations to simulate as optional. Defaults to 200.

	modified:   main.cpp
Added ability to specify a starting genome from saved specimen. This required selectively dampening the initial population's mutation rate of inheritance from the one ancestor. Normally they have 50% mutation rate of a random genotype already, so yields a good genotypic spread. But in this case we want very little variation from the ancestor.

* Changed signatures to use const char* from char*.
* Added paramter --startwith=genomefile

	modified:   main.cpp
	modified:   tAgent.cpp
	modified:   tAgent.h