Some callbacks can't be recognized in vim

[bucketheadv]

trafficstars

Hello,

there are some callbacks can't be recognized as keywords, like:

• after_create_commit
• after_update_commit
• after_destroy_commit
• before_commit

And so on.

I think 'commit' is a important feature, would you like to add this? Thanks.

[tpope]

Yeah feel free to send a pull request.