* change font to Nerd Fonts

* add vim plugin vim-devicons
* change iTerm2 configuration

README.md

@@ -29,6 +29,32 @@ This repo is a store my personal Debian and macOS dotfiles. I use zsh as default
 * and many more ;)
 * For local system-specific changes (proxy settings, etc.), you can create *~.commonrc.local* 
 
+## Requirements
+
+Some of configuration assets, needs [Nerd Fonts](https://github.com/ryanoasis/nerd-fonts) to be installed. You have to install the font only on the host side (your macOS or your Windows maschine).
+
+### Installation of Nerd Fonts
+#### Linux
+```sh
+mkdir -p ~/.local/share/fonts
+cd ~/.local/share/fonts && curl -fLo "Droid Sans Mono for Powerline Nerd Font Complete.otf" https://raw.githubusercontent.com/ryanoasis/nerd-fonts/master/patched-fonts/DroidSansMono/complete/Droid%20Sans%20Mono%20for%20Powerline%20Nerd%20Font%20Complete.otf
+```
+
+#### macOS
+```sh
+cd ~/Library/Fonts && curl -fLo "Droid Sans Mono for Powerline Nerd Font Complete.otf" https://raw.githubusercontent.com/ryanoasis/nerd-fonts/master/patched-fonts/DroidSansMono/complete/Droid%20Sans%20Mono%20for%20Powerline%20Nerd%20Font%20Complete.otf
+```
+
+#### Windows
+Download [Droid Sans Mono for Powerline Nerd Font Complete Mono Windows Compatible.otf](https://github.com/ryanoasis/nerd-fonts/raw/master/patched-fonts/DroidSansMono/complete/Droid%20Sans%20Mono%20for%20Powerline%20Nerd%20Font%20Complete%20Mono%20Windows%20Compatible.otf) and put it in your font folder.
+
+### iTerm2 Setup non-ASCII Text Font
+I am currently using Source Code Pro as my default font, which does not include Powerline support. In addition to this, I do have nerd-fonts installed and configured to be used for non-ascii characters. 
+
+Then, you have configure the fonts in iTerm2:
+
+![iTerm2 Setup non-ASCII Text Font](screenshot/iTerm2_FontConfiguration.png?raw=true  = 250x "iTerm2 Setup non-ASCII Text Font")
+
 ## Installation
 
     $ cd ~