doc: add installation instructions for lazy.nvim

README.md

@@ -25,6 +25,20 @@ https://user-images.githubusercontent.com/506791/209727111-6b4a11f4-634a-4efa-94
 
 oil.nvim supports all the usual plugin managers
 
+<details>
+  <summary>lazy.nvim</summary>
+
+```lua
+{
+  'stevearc/oil.nvim',
+  opts = {},
+  -- Optional dependencies
+  dependencies = { "nvim-tree/nvim-web-devicons" },
+}
+```
+
+</details>
+
 <details>
   <summary>Packer</summary>