vim plugin

Vim supports plugins to extend its functionality. 

1. Here are a few popular plugin managers
   • Pathogen: https://github.com/tpope/vim-pathogen
   • Plug: https://github.com/junegunn/vim-plug
   • Vundle: https://github.com/VundleVim/Vundle.vim
2. Install Plug by adding the following lines to your `.vimrc`:
     ```
     " Install Plug if not already installed
     if empty(glob('~/.vim/autoload/plug.vim'))
         silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
             \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
         autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
     endif
    ```
3. Define your plugins:
     ```
     call plug#begin('~/.vim/plugged')
     Plug 'tpope/vim-commentary'
     Plug 'vim-airline/vim-airline'
     " Add more plugins as desired
     call plug#end()
     ```
4. Save your `.vimrc` and run Vim.
5. Inside Vim, run `:PlugInstall` to install the defined plugins.