Updated slide what is git

what_is_git.md

@@ -2,9 +2,10 @@
 
 ![](img/git_definition.png)
 
+Designed and implemented in 2005 by **Linus Torvalds**
+
 ![](img/linus.jpg)
 
-Designed and implemented in 2005 by **Linus Torvalds**
+`git` is a **version control system** (VCS) for tracking changes in computer files and coordinating work on those files among multiple people [1].
 
-`git` is a version tracking system, essentially for code.
-Collaborative platform for code development
+<div align="left"><small>[1] *https://en.wikipedia.org/wiki/Git*</small></div>