Add TODO
Squashed '3rdparty/objective-git/' changes from 8d0a5f8..4f47bdc

4f47bdc Merge pull request #413 from libgit2/fix-tracking-branch
9bd9d5c bump libgit2 to master
b61a3a9 ++libgit2
38fc5e8 Get the fetch ref specs and pass them to get_remote_fetch.
df69dce ++libgit2
0532962 ++libgit2 for new PR.
3d7f17b ++libgit2
c05c663 Update calls for libgit2 interface changes.
09c68b5 ++libgit2
e091fa7 Revert "Refresh git configuration before looking for the tracking branch."
fc9e3a8 Refresh git configuration before looking for the tracking branch.

git-subtree-dir: 3rdparty/objective-git
git-subtree-split: 4f47bdcdf2380bc5b31b8182adeb3ea14ddb52cc
Merge commit '66544db70e29c647b420dbce490f2a8cbe0ac1bd'
Add Xcode6 project.