Add basic table of contents to README

README.md

@@ -5,6 +5,21 @@ A very basic LISP implementation with an interpreter and editor written for the
 
 [Download the Android app](https://gitlab.com/sagev9000/pebblispandroid/-/wikis/Downloads) to easily type up and send scripts to your Pebble.
 
+# Table of contents
+
+- [Writing in PebbLisp](#writing-in-pebblisp)
+  - [Def](#def)
+  - [If](#if)
+  - [Fn](#fn)
+  - [Cat](#cat)
+  - [Map](#map)
+  - [Fil](#fil)
+- [Pebble-Specific Functions](#pebble-specific-functions)
+  - [Checking the Time](#checking-the-time)
+  - [Vibrating](#vibrating)
+  - [Window Manipulation](#window-manipulation)
+  - [Subscribing](#subscribing)
+
 # Writing in PebbLisp
 PebbLisp includes several built-ins functionalities.