Update README

README.md

@@ -2,4 +2,77 @@
 An app that periodically checks a subreddit for a keyword and will send out an SMTP message if found
 
 # Config
-Configuration is done via a `config.ini` file within the same location of the application. Check the example on how to properly set up the `config.ini` file.
+Configuration is done via a `config.ini` file within the same location of the application. Check the example on how to properly set up the `config.ini` file. You can also pass in a command line argument to specify the location of the config file:
+```
+python main.py --config ~/config.ini
+```
+
+## App
+The app section defines running configuration to parse through.
+
+### Subreddit
+The subreddit of your choosing:
+```
+subreddit = hardwareswap
+```
+
+The configuration does allow for multiple subreddits to be parsed through by adding a comma between the subreddits:
+```
+subreddit = hardwareswap, mechmarket
+```
+
+### Interval
+The interval in minutes on how ofter to request data from Reddit. This example will request data from Reddit every 5 minutes:
+```
+interval = 5
+```
+
+### Keyword
+The keywords to be matched:
+```
+keyword = holy pandas
+```
+
+The configuration does allow for multiple keywords to be parsed through by adding a comma between the keywords:
+```
+keyword = holy pandas, boba u4t
+```
+
+## SMTP
+The SMTP section defines the configuration for sending to the SMTP server.
+
+### SMTP Server
+The location of the SMTP server:
+```
+smtp_server = localhost
+```
+
+### SMTP Port
+The port used for SMTP (at this current time it does not support TLS):
+```
+smtp_port = 25
+```
+
+### SMTP Username
+The username used to authenticate to the SMTP server:
+```
+smtp_username = username
+```
+
+### SMTP Password
+The password used to authenticate to the SMTP server:
+```
+smtp_password = password
+```
+
+### SMTP To
+The e-mail address you want to send the SMTP message to:
+```
+smtp_to = example_to@example.com
+```
+
+### SMTP From
+The e-mail address you want to send the SMTP message from:
+```
+smtp_from = example_from@example.com
+```