Update README

README.md

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 # uploadr
 Upload files to a server on your local network for faster and simpler file transfers across a network.
+
+## config
+The config file for uploadr is very simple. It should be in a class called  `uploadr` in a file called `config.py`. It should be valid python and the two options needed are `domain` and `port` which are both used for the creation of QR code links. The file can also be used as the config file for 
+gunicorn. Here is an example below:
+```python
+class uploadr:
+	domain = "example.com"
+	port = 8005
+
+# gunicorn
+bind = "0.0.0.0:" + uploadr.port
+```
+
+## dependencies
+uploadr uses the following modules:
+ - `flask`
+ - `qrcode`
+ - `werkzeug`
+