Update README.md

add indexes of tutorial

Author: inmoonlight

README.md

@@ -1 +1,15 @@
-# PyTorchTutorial
+# PyTorchTutorial
+
+### 1. CNN
+* How to build CNN model
+* How to train model
+
+### 2. DNN
+* How to make customized batch iterator
+* How to build DNN model
+
+### 3. RNN
+* How to build RNN model
+
+#### 4. GAN
+* How to build GAN