Organizing of project

	deleted:    example_glider_gun.py
	renamed:    mlp_rule_test.py -> experiments/mlp_rule_test.py
	renamed:    variable_equangular_test.py -> experiments/variable_equangular_test.py
Initiali version of visualization module, #10

	new file:   cellular_automata/visualization/__init__.py
	renamed:    experiments/mlp_rule_test.py -> cellular_automata/visualization/base.py
	modified:   experiments/mlp_rule_test.py