small meson introduction

Meson Intro/main.c

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+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+    printf("Hello there.\n");
+    return 0;
+}

Meson Intro/meson.build

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+project('tutorial', 'c')
+executable('demo', 'main.c')

Meson Intro/readme.md

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+# C++ with Meson
+Install Meson and requirements
+```bash
+sudo apt install python3 python3-pip python3-setuptools python3-wheel ninja-build libgtk-3-dev
+```
+```bash
+pip3 install --user meson ninja
+```
+
+Everything installed right you can configure and build the build system by running `meson build`. If the folder `build` already exists, you can run `meson --reconfigure build` to let meson run the configuration again and update the build folder.
+With the build folder existing, `cd build` and run `ninja`. Ninja will gather all dependencies and build every executable for you at once. All executables are then gathered in your build folder. In short summary:
+```bash
+meson builddir && cd builddir
+meson compile
+meson test
+```
+
+## Hello World
+We start with the most basic programm "Hello World". First create the C file which holds the source. 
+Then create a Meson build description and write it in a file called `meson.build`. That's all we need. Build the application with the command:
+```bash
+meson setup builddir
+cd builddir
+meson compile
+```
+Once the executable is built it run: 
+```bash
+./demo
+```
+
+## Adding dependencies
+More complex programms need dependencies and other files. The Meson file includes all instructions to find and use libraries, like GTK+:
+```
+project('tutorial', 'c')
+gtkdep = dependency('gtk+-3.0')
+executable('demo', 'main.c', dependencies : gtkdep)
+```
+To add multiple libraries, simply use seperate `dependency()` calls
+```
+gtkdeps = [dependency('gtk+-3.0'), dependency('gtksourceview-3.0')]
+```
+
+All infos and more about Meson on their [Homepage](https://mesonbuild.com)