Updated readme to show that setup is required for plugin to work corr…

…ectly.

README.md

@@ -17,7 +17,10 @@ for managing your timers.
 Using [packer.nvim](https://github.com/wbthomason/packer.nvim)
 
 ```lua
-use { "linguini1/pulse.nvim" }
+use {
+    "linguini1/pulse.nvim",
+    config = function() require("pulse").setup() end -- Call setup to get the basic config
+}
 ```
 
 Using [lazy.nvim](https://github.com/folke/lazy.nvim)
@@ -26,9 +29,12 @@ Using [lazy.nvim](https://github.com/folke/lazy.nvim)
 {
     "linguini1/pulse.nvim",
     version = "*", -- Latest stable release
+    config = function() require("pulse").setup() end -- Call setup to get the basic config
 }
 ```
 
+You must call `pulse.setup()` in order to get access to the editor commands and default functionality.
+
 ### Configuration
 
 The configuration for pulse.nvim is very simple. Below is the default configuration. See `:h pulse.setup()` for more