Added readme

README.md

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+# SimpleNote
+SimpleNote is a simple and intuitiv Note displaying Program.
+
+## Installation
+```bash
+git clone https://git.timoniemann.de/t/SimpleNote.git  
+cd SimpleNote  
+dotnet publish -c Release -r [OS f.e. linux-x64] --self-contained true  
+cp -r bin/Release/net9.0/linux-x64 ./SimpleNote  
+sudo mv SimpleNote /opt/  
+sudo ln -s /opt/SimpleNote/SimpleNote /usr/bin/SimpleNote  
+```
+
+## Usage
+Open a Terminal and run:
+```bash
+SimpleNote "Example Text"
+```
+
+If u want to dispatch the Window from the Terminal run:
+```bash
+nohup SimpleNote "Example Text" &
+```