Update README.md of the reminders app #1393

Job	Run time
packages (packages/rx_bloc)	1m 55s
flutter_packages (packages/rx_bloc_list)	2m 32s
packages (packages/rx_bloc_test)	2m 23s
cli_packages (packages/rx_bloc_cli)	1m 36s
flutter_packages (packages/flutter_rx_bloc)	2m 38s
examples (examples/booking_app)	2m 30s
packages (packages/rx_bloc_generator)	3m 18s
examples (examples/counter)	1m 45s
examples (examples/division)	1m 26s
examples (examples/favorites_advanced/rx_bloc_favorites_advanced)	1m 54s
examples (examples/todoapp)	2m 24s
build	1s
	24m 22s

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