gdk 0.1.0

# gdk [![Build Status](https://travis-ci.org/rust-gnome/gdk.png?branch=master)](https://travis-ci.org/rust-gnome/gdk) [![Build status](https://ci.appveyor.com/api/projects/status/xaruu6280j909hsy?svg=true)](https://ci.appveyor.com/project/GuillaumeGomez/gdk)
GDK binding in rust