Minor changes to overview and updated thanks slide

list.json

@@ -21,17 +21,17 @@
         }
     },
     {
-        "filename": "github_gitlab.md",
+        "filename": "installation.md",
         "attr": {
         }
     },
     {
-        "filename": "installation.md",
+        "filename": "essential_commands.md",
         "attr": {
         }
     },
     {
-        "filename": "essential_commands.md",
+        "filename": "github_gitlab.md",
         "attr": {
         }
     },

thanks.md

+# References
+
+[1]: **Git** Book: https://git-scm.com/book/en/v2
+
+
+# Acknowledgement
+
 Laurent Heirendt
 
 ![](https://avatars0.githubusercontent.com/u/20812112?v=3&s=180)