Merge pull request #61 from GuillaumeGomez/patch-1

Add gtk to the projects updates list

Author: Gankra

content/2015-05-18-this-week-in-rust.md

@@ -258,6 +258,7 @@ The current beta is `1.1.0-beta (cd7d89af9 2015-05-16) (built 2015-05-16)`.
 * [A Racer-based code completion plugin for KDE's Kate editor](https://blogs.kde.org/2015/05/18/basic-code-completion-rust-kdes-kate-and-later-kdevelop).
 * A Kickstarter for a book called [Rust Programming Concepts](https://www.kickstarter.com/projects/1712125778/1409335994?token=951963e5).
 * [KISS-UI](https://github.com/cybergeek94/kiss-ui), a simple UI toolkit for Rust.
+* [gtk](https://github.com/rust-gnome/gtk), the GTK+ 3.x's binding. 
 
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