Updated readme

README.md

@@ -1,10 +1,35 @@
 OpenModem Configuration Utility
 ==========
-This is the graphical configuration utility for [OpenModem](https://github.com/markqvist/OpenModem). For packaged builds, see the [OpenModem page at unsigned.io](https://unsigned.io/openmodem).
+
+This is the graphical configuration utility for [OpenModem](https://github.com/markqvist/OpenModem).
+
+To download packaged builds, see the [OpenModem page at unsigned.io](https://unsigned.io/openmodem).
+
+Packages are supplied for MacOS, Linux 64-bit and Windows. There is currently no pre-built package for Raspberry Pi, but you can use the instructions below to run it on Raspbian as well.
+
+If you prefer to run from source, it is very easy to do so:
+
+```bash
+# If you don't already have Python3, install it:
+sudo apt install python3 pip3
+
+# If on a Raspberry Pi, install GTK and webkit dependencies 
+sudo apt install python3-gi python3-gi-cairo gir1.2-gtk-3.0 gir1.2-webkit2-4.0
+
+# Install OpenModem Configuration dependencies
+pip3 install pyserial requests psutil pywebview
+
+# Download the program from GitHub
+git clone https://github.com/markqvist/openmodemconfigutil.git
+
+# Go to the folder and run the program
+cd openmodemconfigutil
+python3 openmodemconfigutil.py
+```
 
 ## Dependencies:
  - Python 3
  - pyserial
  - requests
  - psutil
- - pywebview
+ - pywebview