update README

README.md

@@ -1,5 +1,31 @@
 # TMTC Commander EIVE
 
+This application can be used to test the EIVE On-Board Software. Furthermore, it can
+also be used to retrieve all sorts of telemetry data like housekeeping data.
+
+It is recommended to use this application with a virtual environment.
+The [virtual environemnt](#venv) chapter describes how to set one up.
+
+The configuration file can currently be found at `tmtc_conf.json`. It caches settings
+like the default communication interface or parameters like the TCP port when using the TCP
+communication interface.
+
+# Examples
+
+Assuming you are running in a virtual environment
+
+Run CLI mode
+
+```sh
+./tmtccli.py
+```
+
+Run GUI mode
+
+```sh
+./tmtcgui.py
+```
+
 # Run Linter
 
 Can be used to quickly check validity of script. Install `flake8` first
@@ -20,7 +46,7 @@ and then run the `lint.py` script
 ./lint.py
 ```
 
-# Set up virtual environment
+# <a id="venv"></a> Set up virtual environment
 
 ## Linux
 
@@ -63,4 +89,3 @@ venv\Scripts\activate.bat
 cd tmtccmd
 py -m pip install -e .[gui]
 ```
-