[chrome-gnome-shell/gnome/migration] Readme: added requirements

[Yuri Konotopov <ykonotopov src gnome org>]

commit 6aa07422c0df6920523d532d5fc03eeb898a0b3b
Author: Yuri Konotopov <ykonotopov gmail com>
Date:   Mon Mar 7 22:59:21 2016 +0300

    Readme: added requirements

 README.md |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/README.md b/README.md
index 6510506..f773236 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,11 @@ This repository contains extension for Google Chrome browser and native
 connector that provides integration with GNOME Shell and the corresponding
 extensions repository https://extensions.gnome.org/, codenamed SweetTooth.
 
+Requirements
+------------
+ * GNOME Shell up to 3.18
+ * Python 2.7
+
 Installation
 ------------