Update 'Custom-Commands'

Custom-Commands.md

@@ -0,0 +1,16 @@
+You can create custom commands using your Biscuit Discord bot.
+
+Below is a snippet of a sample config you can refer to when setting up your own commands.
+
+```python
+#To add a command first add your command name to this list
+Custom-Command-Names = test,hello
+
+#Then copy these and replace test with your command name
+cc-test-message = Testing testing 1 2 3
+cc-test-description = Displays a test message.
+
+#You can also ping the sender. Just add <user>.
+cc-hello-message = Hello, <user>!
+cc-hello-description = Greets the sender.
+```