adds a quick readme

readme.md

@@ -0,0 +1,15 @@
+# Installation
+
+```bash
+sudo apt install -y vim-nox git python3-pip python3-venv npm
+mkdir -p $HOME/sources/
+cd $HOME/sources
+git clone https://gitea.86thumbs.net/waldek/vimrc.git
+ln -s $HOME/sources/vimrc/main.vimrc $HOME/.vimrc
+```
+
+# Customization
+
+The `main.vimrc` file is the entry point which reads all the other files.
+If your user name is not `waldek` it won't read the `waldek_plugins.list` nor the `waldek_plugins.vimrc`.
+You can add your own files by creating these two files but with your own username.