Delete gists

[skanehira]

👔 Overview

Add feature that can delete selected gists.

👖 How to achieve

1. Add key map ghd to delete gist
   1. If doesn't select any gist, then delete gist on cursor
   2. if Use <C-j>/<C-k> to selected any gists, delete selected gists.
2. Confirm delete gists

   Do you want delete those gists?(y/n): 
     aaaaaa.md
     bbbbbb.md	
   

🧦 Steps

1. Open gists buffer
2. Use ghd to delete gist.