Divergence - Now has a movie tag

So, after wrestling with this for a spell, I've decided to add the MLP movie tag to Divergence.

To be fair, one could have said that it needed one based on the inclusion on Tempest Shadow, but my original argument was that the story was not going to delve so deeply into the particulars of that movie to warrant the tag (especially since said movie is completely canon to the show). In fact, part of me still wants to umbrella it under the show's tag. However, as I now develop later parts of the story, I find myself examining the events of the movie even more closely and suspect that the story will so too.

So that's all. There's been a tag added.