Update requirements

README.md

@@ -70,6 +70,7 @@ For an example to the working application, check [`test_app.py`](tests/test_app.
 * Flask
 * requests_oauthlib
 * cachetools
+* discord.py
 
 
 ### Documentation

docs/introduction.rst

@@ -20,6 +20,12 @@ Requirements
 - **requests_oauthlib**
     It also requires requests_oauthlib to make OAuth2 sessions with discord.
 
+- **cachetools**
+    Flask Discord supports caching discord objects to boost the performance when page loads.
+
+- **discord.py**
+    Makes use of discord.py for re-using many Discord models.
+
 Installing
 ----------