Add usage instructions and configuration details to README.md

README.md

@@ -1 +1,41 @@
-# METAR NAVIGATE
+# METAR NAVIGATE
+A Simple METAR Application that feeds from CheckWX API
+
+It has two modes of display, a simple CLI using Rich and a TUI using Textual
+
+## Usage
+First, you need to install the application by issuing:
+```bash
+pip install -e .
+```
+this will install the application and the dependencies
+after that you'll need to configure the application by issuing:
+```bash
+metarNavigate --no-tui -c
+```
+or 
+```bash
+metarNavigate --no-tui --configure
+```
+
+you'll need a checkWX API key to use the application which is free
+
+after the configuration process you can use the application by issuing:
+
+```bash
+metarNavigate --no-tui <ICAO>
+```
+this will run the application in CLI mode and display the METAR for the ICAO code issued as argument.
+
+If you wish to see a detailed breakdown of the METAR in CLI mode, you can issue:
+
+```bash
+metarNavigate --no-tui --detailed <ICAO>
+```
+or
+```bash
+metarNavigate --no-tui -d <ICAO>
+```
+this will print all details of the METAR Message with an explanation of each part of the message.
+
+