Add Jump Between And Stage Git Hunks With Fugitive as a vim til

vim/jump-between-and-stage-git-hunks-with-fugitive.md

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+# Jump Between And Stage Git Hunks With Fugitive
+
+Once you [open vim-fugitive's git summary
+window](open-the-fugitive-git-summary-window.md), you'll see a listing of the
+tracked files with unstaged changes. Each of those files is made up of one or
+more _hunks_—a semi-contiguous chunk of changes in a Git diff.
+
+You can jump forward and backward through these hunks with `]c` and `[c`,
+respectively. If the inline diff view of a given file has not already been
+expanding, these navigational keybindings will auto-expand it.
+
+With the cursor over the heading of a particular hunk, you can hit `s`
+(assuming you're looking at unstaged changes) to _stage_ the entire hunk.
+Similarly, if the cursor is over the hunk heading of a change in the staged
+area, you can hit `u` to unstage that entire hunk.
+
+For more details and a visual walkthrough, [check out this screencast on
+staging commits within Vim](https://www.youtube.com/watch?v=41OI6pszvv0).