Updated readme.

Author: gmpreussner

README.md

@@ -13,6 +13,9 @@ string that can be used for adding personal notes or other textual information
 to your project, or to be consumed within Blueprints. The plug-in also includes
 an asset editor, asset factories, and asset actions for the Content Browser. 
 
+Make sure to pull the *Tag* that matches your Unreal Engine version. If you sync
+to *Master* the code may not compile, because it may depend on Engine changes
+that are not yet available in the UE4 Master branch.
 
 ## Supported Platforms
 
@@ -39,11 +42,6 @@ If you use it as an Engine plug-in, clone this repository into the
 */Engine/Plugins/Media* directory and compile your game. Full Unreal Engine 4
 source code from GitHub (4.9 or higher) is required for this.
 
-After compiling the plug-in, you have to **enable it** in Unreal Editor's
-plug-in browser.
-
-TODO
-
 
 ## Support