updatd docs

Author: mac-s-g

README.md

@@ -3,7 +3,7 @@ Interactive json viewer wrapped up in a react component.
 
 ## Usage
 ### Implementation Example:
-![alt text](https://github.com/mac-s-g/react-json-view/blob/master/doc/source-example-4.png?raw=true "Usage Example")
+![alt text](https://github.com/mac-s-g/react-json-view/blob/master/doc/source-example-5.png?raw=true "Usage Example")
 
 ### Output Example:
 ![alt text](https://github.com/mac-s-g/react-json-view/blob/master/doc/output-example-3.png?raw=true "Output Example")

doc/example-usage.js

@@ -15,7 +15,7 @@ let my_important_data = {
         'last-sibling': {
             grand_child: NaN,
             'grand-child-func': (a) => {
-                let b = a*a;
+                let b = 5;
                 return a.push(b);
             }
         }