Added screencap

Author: mpetrov

README.md

@@ -22,17 +22,24 @@ instructions on how to use and configure the plugin.
 ## Usage
 
 This plugin can be invoked using the `:DiffStat` command. When inside a repo,
-run `:DiffStat [commits..]` to open the DiffStat window. See `:help DiffStat`
-for more details.
+run `:DiffStat [commits..]` to open the DiffStat window.
+
+An example of this would be `:DiffStat HEAD~1` to view a diff against the
+parent of the current tip.
+
+See `:help DiffStat-usage` for more details.
 
 ## Mapping
 
 One can easily remap `<leader>d`, for example, to view the last couple commit
 points as follows:
 
-`noremap <leader>d :DiffStat HEAD HEAD..HEAD~1 HEAD~1..HEAD~2 HEAD~2..HEAD~3<cr>`
+`noremap <leader>d :DiffStat HEAD HEAD..HEAD~1 HEAD~1..HEAD~2<cr>`
 
+## Screenshots 
 
+![DiffStat Screenshot](https://raw.github.com/wiki/mpetrov/vim-diffstat/diffstat.png)
 
+Using `:DiffStat HEAD HEAD~1` on the OpenJDK7 source.