Add README and slides

README.md

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+# Kotlin Course
+
+This repository contains some examples and slides built
+with [reveal-md.js](https://github.com/webpro/reveal-md "link to the git repository of the reveal md project").
+To view the slides, the following command must be executed with
+the [node package manager (npm)](https://nodejs.org/en/download/package-manager/) [^1]:
+
+```bash
+npm install -g reveal-md
+```
+
+execute the following command:
+
+```bash
+reveal-md slides.md --theme league
+```
+
+[^1]: a tutorial for the installation can be found at the link above

reveal.json

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+{
+  "controls": true,
+  "progress": true
+}

slides.md

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+# Dezentrale Kotlin course
+
+## Kotlin language basics
+
+Kotlin is a...
+
+- multiplatform programming language
+- its penis is bigger as any other