Added simple README, GPL3 LICENCE and a install script placeholder

REAME.md

+DOTFILES
+==============================================================================
+
+This repo host my custom config files for linux.
+
+Installation
+------------------------------------------------------------------------------
+
+``` bash
+git clone git://github.com/jpducassou/dotfiles
+cd ~/dotfiles
+./install.sh
+```
+
+The is a lot of info out there about dotfiles, just check:
+* [dotfiles.github.io](http://dotfiles.github.io/)
+* [Using Git and Github to Manage Your Dotfiles](http://blog.smalleycreative.com/tutorials/using-git-and-github-to-manage-your-dotfiles/)
+
+

install.sh

+#!/bin/bash
+
+# ============================================================================
+# Dotfiles install script
+# ============================================================================
+set -x
+echo "PLACEHOLDER"
+