readme: added build badge

Author: niveditn

README.md

@@ -1,9 +1,10 @@
 
 # NodeJS SDK v2.x for ImageKit
 
+[![Node CI](https://github.com/imagekit-developer/imagekit-nodejs/workflows/Node%20CI/badge.svg)](https://github.com/imagekit-developer/imagekit-nodejs/)
 [![npm version](https://img.shields.io/npm/v/imagekit)](https://www.npmjs.com/package/imagekit) 
-[![Twitter Follow](https://img.shields.io/twitter/follow/imagekitio?label=Follow&style=social)](https://twitter.com/ApacheAirflow)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![Twitter Follow](https://img.shields.io/twitter/follow/imagekitio?label=Follow&style=social)](https://twitter.com/ApacheAirflow)
 
 New version of the NodeJS SDK for [ImageKit.io](https://imagekit.io) that implements the new APIs and interface for performing different file operations.
 
@@ -350,7 +351,7 @@ const calculateDistance = () => {
     // ...
     // Calculate the distance between them:
     const distance = imagekit.pHashDistance(firstHash, secondHash);
-	return distance;
+    return distance;
 }
 ```
 #### Distance calculation examples