Update README.md

Author: danwritecode

README.md

@@ -15,7 +15,7 @@ clings is a C version of the popular program "rustlings" made for the Rust progr
 
 The purpose of this program is to take you from a total C noob, to somewhere beyond beginner.
 
-![demo](https://raw.githubusercontent.com/danwritecode/clings/master/demo_v2.gif)
+![demo](https://raw.githubusercontent.com/danwritecode/clings/master/demo_v3.gif)
 
 # Dependencies
 1. gcc