Add constructor with values to FloatingPointChromosome

[mersadk]

As it is now when ever you create instance of FloatingPointChromosome, it will randomly create gene values.

I have a case where I need to stop optimization at some time, save results to DB and resume it later. For this I need to be able to give gene values to FloatingPointChromosome.

If you are willing to merge, I'll create pull request with this fix.

[giacomelli]

This will be a good improvement to FloatingPointChromosome.
Yeah, you could create the pull request.

Thanks.

[mersadk]

Done.