Installing-the-project.md Addaed info about the recommended server version

Author: TikhomirovSergey

docs/Installing-the-project.md

@@ -1,6 +1,6 @@
 #Requirements
 
-Firstly you should install appium server. [Appium getting started](http://appium.io/getting-started.html).
+Firstly you should install appium server. [Appium getting started](http://appium.io/getting-started.html). The version 1.6.3 or greater is recommended.
 
 Since version 5.x there many features based on Java 8. So we recommend to install JDK SE 8 and provide that source compatibility.