Update README.md

Author: nswamy14

README.md

@@ -6,7 +6,8 @@
  Node I2Djs - is an Open source nodejs framework for server side 2D graphics. Based on Canvas.
 
 ### Node - I2dJs - Canvas
-<a href="https://codesandbox.io/s/node-js-forked-enynz3?file=/index.js&resolutionWidth=1400&resolutionHeight=800">
-  <img src="https://i2djs.github.io/node-i2djs/examples/examplePreview.png" width=500>
-</a>
-
+<p align="center">
+  <a href="https://codesandbox.io/s/node-js-forked-enynz3?file=/index.js&resolutionWidth=1400&resolutionHeight=800">
+    <img src="https://i2djs.github.io/node-i2djs/examples/examplePreview.png" width=500>
+  </a>
+</p>