update README

README.md

@@ -7,6 +7,13 @@ There are two types of modules:<br>
 - <b>Mini Piano</b>: displays a simple piano keyboard for your Windows taskbar<br>
 - <b>Piano Tutorial</b>: displays a bigger piano keyboard with a timeline of pressed keys<br>
 
+## Installation
+This addon requires the core application [DesktopModules](https://github.com/LabyStudio/desktopmodules)
+
+You can download the addon jar file [here](https://github.com/LabyStudio/piano-addon/releases/) <br>
+Put the built jar file into the following directory: ``C:/Users/<name>/AppData/Roaming/DesktopModules/addons/``<br>
+And then you are ready to launch the core application.
+
 ### Configuration:
 To set up your MIDI device, you have to enable it in ``devices``.<br>
 If ``show_mini_piano_on_detect`` is set to true, the mini piano will enable itself once it detects a MIDI device.<br>
@@ -25,4 +32,7 @@ You can additionally broadcast the MIDI messages to your other applications by s
     "port": 0
   }
 }
-```
+```
+
+## Run in IDE
+Launch the main class ``StartPiano``