I do not have a TMW for it but if you are OK with a WeakAura then I have exactly what you are looking for.
Code:
dOKRiaGijYLOqvJcr6uiQMffClkf2fizyikhdrSmkv9mcQPbs5AarBtIY3OuzCaW5KOQ3biZJGe3dGoiiwiLsEiivtesUOeSrGWhHQAKuO4KsYkLuZeQ0nHuANsf)KadfsXsbqpvPPIWvbsBLcL(kG6TsuzUuk1DPu0Er9xigSQdtOfdv8ykzYe1LjTzG6Zez0qvonvwnbP8AcsA2u0TLQ2ns)gudxcTCQ65sz6kUou2UuPVtHkJhsLZtHSEcs17Hu19ji2VyMeMGxhVv0r9GfTuBxzbtB2ElQMMiGW5vKkQLJQEXr5TXRxyY4TNxzELzcEbdtN1j0vUdijJxzxtOHrTgxxLXHxzxROPOrek6gEnElETWAdCpHIUHxWyuRXbtjL8uNNNNdmeeuci2CaZbgcckbeBoSph9cbOuNNNNdmeeuciwOQKOUrZbmhyiiOeqSqvjrDJMd7ZrVqak15555MWwIM5E1c2lNdyoWqqqjGyHQsI6gTCGsDd(GwHI0sJOxsNsKBtGsDEEEUdmPE1c2ltE(GNstDEEEEEEEUxhmpnVnEhvckWW(EXH0sgVRKHCVAb7LHcspmgDYH95KroqPopppxnBAQZZZZZZZZ96G5P5Law0noQujGsDEEEUsLtTsLtDQtnVEvYbtjmQOY7OOB41c2e2ZeCh7zqyN9qJeYaaj2bsHbajKimakJbBdqkm3ryUdz8WRrcadUPd3Xg2rgVn1emAGD0HxOxOdrbaYROSSBCWurtKX7KKuFJj4oKWe8oENKK6zcEhJkQ8AH1g4EEBy4ODv6SyGb7qhViqhYsGSeqaibVYyEXXbt51EE1UkD41yurZbpEBy4ODv6GgVc2HoEx0uaxC51cRnW98cgJAnoykPigqm0RTMOKAaXaIHgmM3snGyaXGS2g8bTcLbedigqmGyOvunnnGyqShgJoKN6888CGHGGsaXMdyoWqqqjGyZH95OxiaL6888Ch4CsbL6MQgOu3qAdgZBP5W(8sLmKxQOPOrQVe55Iu58wr10mhqaZlvjrDJwI88bpLM68888888CGHGGsaXcvLe1nAoG5adbbLaIfQkjQB0CyFo6fcqPoppppppp3boN0ET1eL0CabmV0IMc4IlcAkaWkbOQGockiOfc(fkrE(GNstDEEEEEEEEEEEoWqqqjGyHQsI6gTCYABWh0ku2mhWCGHGGsaXcvLe1nA5K12GpOvOSzoSph9cbOuNNNNNNNNNNNNBcBjAM7vlyVCoG5adbbLaIfQkjQB0YjRTbFqRqztGsDEEEEEEEEEEEUxTG9YqbPhgJo5aMl2dJrhGsDEEEEEEEEEEEUxhmpnF8ykqPopppppppxPYPoppppppp3boN0ET1eL0CabmV0IMc4IlceqbieeawaTcm2cOkrE(GNstDEEEEEEEEEEE(iIJPcLx7H7QKcmeeuciwOQKOUrnKlRTbFqRqroqPoppppppppppp3RdMNMdw0SPaL68888888CLkN6888CLkN6888CVoyEAoyrZMcuQvQCQtDQ5v7Q0PXl0fGwBbHabxb4JuWyl0Hab0oGOcxIcaSakETWAdCpYyurLxTRshETWAdCpcEozL3X1RY8WlgD8ojj1Ze8Wdp8ACo5bpgeGS8L3EHfUm7kJm7kRmOvg0yW2aAGKxNmV4k2M8kjQB0CcNLqLxWW0H3cMDbTkh6W94io8sX6j8ojj134o2ZlEQtcVHbHDKjCzaaaKiC5TJmaaa7bzzmyBan741ewuMj4fRPiwMITgBlE9WMktWBpM54ycE4HxSMIq1UQNXHxSMI0kQwST4TvuTycEBoQKPYDSNhETmfBnMG3MJkzQ8Iwi4xGhE4D8ojj1Ze8kJ5fhhmLx75vwXbdmycJkQ8AmqaiAbbO4YRfwBG7rWZjR8oUEvM3wr10SJyVYBLe1nkVwyTbUhzmQOYR2vPdVnmC0UkDwmWGDOJxeuqqle8lWlwtrK12GrDdJdVAxLo8cD4ECeNCCHL4f24OcOMgX2IxmQ2vPdVJRxL5fRPiTIQPzhXELXHxlS2a3ZlVAxLonE51R9ckQEXb2ZRqHxmQB4De9s6WlvSxBmb3HeERKOUr5HxzTnyu3W7i6L0HhE4vKj4TsI6gL3k6OEWIwQTRSGPnBVfvtteq48ksf1YrvV4O8WBxUdjqJeY4Hza
This will show you what your last tick of ignite ticked for, so as soon as the damage of your ignite goes out, it will update, I found this much more satisfying than CBhelper or mybigignite due to it's simplicity.