README.md: Added a FAQ: why is init.lua a single file

Author: dam9000

README.md

@@ -161,6 +161,16 @@ Each PR, especially those which increase the line count, should have a descripti
 * Are there any cool videos about this plugin?
   * Current iteration of kickstart (coming soon)
   * Here is one about the previous iteration of kickstart: [video introduction to Kickstart.nvim](https://youtu.be/stqUbv-5u2s). Note the install via init.lua no longer works as specified. Please follow the install instructions in this file instead as they're up to date.
+* Why is the kickstart `init.lua` a single file? Wouldn't it make sense to split it into multiple files?
+  * The main purpose of kickstart is to serve as a teaching tool and a reference
+    configuration that someone can easily `git clone` as a basis for their own.
+    As you progress in learning Neovim and Lua, you might consider splitting `init.lua`
+    into smaller parts. A fork of kickstart that does this while maintaining the exact
+    same functionality is available here:
+    * [kickstart-modular.nvim](https://github.com/dam9000/kickstart-modular.nvim)
+  * Discussions on this topic can be found here:
+    * [Restructure the configuration](https://github.com/nvim-lua/kickstart.nvim/issues/218)
+    * [Reorganize init.lua into a multi-file setup](https://github.com/nvim-lua/kickstart.nvim/pull/473)
 
 ### Windows Installation