Add engine version

XCanG · web-flow · commit a5a449709064 · 2021-05-07T11:20:43.000+05:00
diff --git a/README.md b/README.md
@@ -1,3 +1,5 @@
 # UI Test
 
 This is test project to play around with Unity UI.
+
+Using Unity version **2020.3.6f1** (LTS)
