fix readme for self hosting

Author: BobDotCom

README.rst

@@ -6,3 +6,20 @@ A discord.py bot for The Coding Academy
 Feel free to contribute.
 
 Also we need someone to write a better README
+
+****************
+How to self-host
+****************
+Open up cmd, terminal, or whatever the shell is called on your device. Once in there, run this:
+
+.. code-block:: shell
+
+    git clone https://github.com/The-Coding-Academy/coding-bot-v4.git; cd coding-bot-v4; . ./setup
+
+It will prompt you to input your discord user id and a token for the bot. After this is finished (assuming no errors popped up, if they did they will tell you how to fix it), you can run
+
+.. code-block:: shell
+
+    python bot.py
+
+to start up the bot.