Updated README.md

Author: eagafonovlge

README.md

@@ -67,10 +67,18 @@ Currently, running the simulator in Windows yields better performance than runni
 
 ### Building and running from source
 
-**NOTE**: to clone repository faster, clone only single branch:
+**NOTE**: to clone repository faster, clone only single branch.
+
+To get latest code from master branch:
 
     git clone --single-branch https://github.com/lgsvl/simulator.git
 
+Alternatively, you can get source code of specific release. Here is an example how to checkout by release tag `2020.03`
+
+    git clone https://github.com/lgsvl/simulator.git
+    cd simulator
+    git checkout 2020.03
+
 Check out our instructions for getting started with building from source [here](Docs/docs/build-instructions.md).
 
 
@@ -99,4 +107,4 @@ Please feel free to provide feedback or ask questions by creating a Github issue
 
 Copyright (c) 2019 LG Electronics, Inc.
 
-This software contains code licensed as described in LICENSE.
+This software contains code licensed as described in LICENSE.