Update README.rst

Author: GreatTaku

async/README.rst

@@ -4,3 +4,32 @@ Welcome to Discord.py Async Examples
 
 Installing
 ==========
+
+Console Prefixes
+----------------
+
+ * OsX, Linux, Unix distributions: 
+     * ``python3``
+ * Windows:
+     * ``python3`` in ``PATH``: ``python3``   
+     * ``python3`` not in ``PATH``: ``py -3``
+     
+Installing discord.py
+---------------------
+
+In Terminal, CMD, or any command-line console, type in the following:
+
+``<prefix> -m pip install -U discord.py[voice]`` 
+(Replace ``<prefix>`` with the aforementioned prefix)
+
+If you're using a venv, don't forget to activate it!
+
+You're now ready to run some examples! To run any example in this repository, 
+see the README.rst in the top-level directory for directions.
+
+Examples Index
+==============
+
+ 1. ``introduction.py``
+ 
+