Issue title: What does "L" signify as remote status?
 Issue body: My prompt is something along the lines of:

```
my_current_path [master L|✔]
```

What is the meaning of "L" in this instance? Do I understand correctly that it indicates that the remote branch is neither ahead of nor behind the local branch?

Many thanks.

 Comments: 
 Comment 0: No. See #67.

 Comment 1: Duh, thanks!

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