[iamthedata]

Pretty cool, but you could add a brief comparision with vim-gitgutter to the Readme, or explain why you felt the need for a new plugin.

[mhi]

I just added a short explanation to the README:

Yes, I knew about vim-gitgutter before, I even contributed to it. But in the end I just didn't like the codebase and started my own plugin. And because I like programming VimL.

The main difference is probably the support for other DVCS. Moreover, execution speed and high configurability are two of the design goals.

[iamthedata]

Indeed, I noticed it is faster!

Rest well. :)