Format Git Commit Messages

[adarsh]

Reason for Change

• When writing git commit message (like this one), I use asterisks to create markdown bullets.
• When typing past the character limit, I get word wrapping and a new asterisk, which I don't want.

  Changes

• Add a ftplugin file, which is specific to gitcommit files.
• Set the formatoptions to roq which eliminates this behavior.

See help fo-table in Vim for more options.