Simplify the installation instruction

README.md

@@ -40,24 +40,15 @@ repository][fzf-main], which means you need to **set up both "fzf" and
 
 ### Using [vim-plug](https://github.com/junegunn/vim-plug)
 
-If you already installed fzf using [Homebrew](https://brew.sh/), the following
-should suffice:
-
 ```vim
-Plug '/usr/local/opt/fzf'
+Plug 'junegunn/fzf'
 Plug 'junegunn/fzf.vim'
 ```
 
-But if you want to install fzf as well using vim-plug:
-
-```vim
-Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
-Plug 'junegunn/fzf.vim'
-```
-
-- `dir` and `do` options are not mandatory
-- Use `./install --bin` instead if you don't need fzf outside of Vim
 - Make sure to use Vim 7.4 or above
+- If you have already installed fzf using [Homebrew](https://brew.sh/), and do
+  not wish to have another copy on your system, replace the first line with
+  `Plug '/usr/local/opt/fzf'`
 
 Commands
 --------