Updates README by including formatting annimations

Author: gnikit

README.md

@@ -144,6 +144,10 @@ Two formatters are supported [`findent`](https://github.com/gnikit/findent-pypi)
 and [`fprettify`](https://github.com/pseewald/fprettify). Both of them can be
 installed with `pip` automatically through the extension.
 
+findent             |  fprettify
+:-------------------------:|:-------------------------:
+![](./images/findent-demo.gif)  |  ![](./images/fprettify-demo.gif)
+
 The formatter is controlled by the user option
 
 ```json
@@ -156,7 +160,7 @@ Additional arguments to the formatter can be input using
 
 ```json
 {
-    "fortran.formatting.args":, ["-Cn", "-Rr"]
+    "fortran.formatting.args":, ["-Cn", "--align-paren=1"]
 }
 ```