Added First CNN tutorial

Author: sayands

README.md

@@ -276,6 +276,7 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 * [Generate an Average Face using Python and OpenCV](https://www.learnopencv.com/average-face-opencv-c-python-tutorial/)
 * [Break A Captcha System using CNNs](https://medium.com/@ageitgey/how-to-break-a-captcha-system-in-15-minutes-with-machine-learning-dbebb035a710)
 * [Use pre-trained Inception model to provide image predictions](https://medium.com/google-cloud/keras-inception-v3-on-google-compute-engine-a54918b0058)
+* [Create your first CNN](https://hackernoon.com/deep-learning-cnns-in-tensorflow-with-gpus-cba6efe0acc2)
 
 ### Miscellaneous: