add customer choice to readme #766

Job	Run time
test (3.10, false, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimi...	10m 40s
test (3.10, false, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.p...	6m 58s
test_slow (tests/clv/models/test_beta_geo_beta_binom.py)	13m 6s
test (3.10, false, tests/clv)	8m 54s
test_slow (tests/clv/models/test_pareto_nbd.py)	6h 0m 13s
test (3.10, false, --ignore tests/mmm --ignore tests/clv)	4m 40s
test_slow (--ignore tests/clv/models/test_beta_geo_beta_binom.py --ignore tests/clv/models/test_p...	5m 31s
test (3.12, true, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimiz...	11m 53s
test (3.12, true, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.py...	7m 29s
test (3.12, true, tests/clv)	10m 9s
test (3.12, true, --ignore tests/mmm --ignore tests/clv)	6m 23s
	7h 25m 56s

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