add GUI downloads to release page

_posts/2017-09-07-monero-0.11.0.0-released.md

@@ -91,7 +91,15 @@ This release was the direct result of 39 people who worked, largely unpaid and a
 - Robby Weinberg
 - Howard Chu
 
-### Official Download Links
+### Official Download Links (Graphical Interface)
+
+- [Windows, 64-bit](https://downloads.getmonero.org/gui/monero-gui-win-x64-v0.11.0.0.zip)
+- [macOS, 64-bit](https://downloads.getmonero.org/gui/monero-gui-mac-x64-v0.11.0.0.tar.bz2)
+- [Linux, 64-bit](https://downloads.getmonero.org/gui/monero-gui-linux-x64-v0.11.0.0.tar.bz2)
+- [Linux, 32-bit](https://downloads.getmonero.org/gui/monero-gui-linux-x86-v0.11.0.0.tar.bz2)
+
+### Official Download Links (Command-Line)
+
 - [Windows, 64-bit](https://downloads.getmonero.org/cli/monero-win-x64-v0.11.0.0.zip)
 - [Windows, 32-bit](https://downloads.getmonero.org/cli/monero-win-x86-v0.11.0.0.zip)
 - [macOS, 64-bit](https://downloads.getmonero.org/cli/monero-mac-x64-v0.11.0.0.tar.bz2)