Added tup.config to .gitignore
Added projectRootPath to Parameters
Font file is now always read from the correct path
Merge remote-tracking branch 'petersohn/master'

Comments on conflicts:
.gitignore
	I used my version here, it is not redundant
	because Tup generates gitignores in the
	variant directories anyway
src/GameManager.cpp
	Had to move the extraNeurons constant out to
	class scope, because it is used there as well
Added generation-limit parameter

Fixes #18