add fun docs

Author: imdevan

docs/fun.md

@@ -0,0 +1,24 @@
+all brew installable 
+
+https://github.com/abishekvashok/cmatrix/
+
+
+```
+cmatrix
+```
+
+
+
+https://medium.com/@pangarevaishnavi639/getting-creative-with-linux-fun-commands-for-terminal-amusement-73259273d493
+
+
+sl train
+
+```
+sl
+```
+
+
+```
+fortune | cowsay | lolcat
+```