Update README.md

Meph1k · web-flow · commit 3abc33d123ad · 2018-04-05T17:19:28.000+02:00
diff --git a/README.md b/README.md
@@ -8,6 +8,10 @@ The examples below show the situation right after taking a photo. The first one
 ![Blurred photo](./images/blurred_photo.png)
 ![Clear photo](./images/clear_photo.png)
 
+# Blog post
+
+https://brainhub.eu/blog/opencv-react-native-image-processing/
+
 # Prerequisites
 
 1. XCode
