Update README.md

Author: rdeioris

README.md

@@ -17,7 +17,7 @@ In the development menu, you get access to the 'PythonConsole' too, you can use
 
 All of the exposed engine features are under the 'unreal_engine' virtual module (it is completely coded in c into the plugin, so do not expect to run 'import unreal_engine' from a standard python shell)
 
-The currently supported Unreal Engine versions are 4.12, 4.13 and 4.14
+The currently supported Unreal Engine versions are 4.12, 4.13, 4.14 and 4.15
 
 # Binary installation on Windows (64 bit)