Merge pull request #29 from CodingTrain/shiffman-patch-1

Update TODO.md

Author: shiffman

TODO.md

@@ -1,8 +1,10 @@
 # To-Do List
 
-* Redo gradient descent video about
-* delta weight formulas, connect to "mathematics of gradient" video
-* Implment gradient descent in library / with code
-* Talk about different activation function
-* XOR coding challenge
-* MNIST coding challenge
+* [x] Redo gradient descent video about
+* [x] delta weight formulas, connect to "mathematics of gradient" video
+* [x] Impelment gradient descent in library / with code
+* [ ] XOR coding challenge
+* [ ] MNIST coding challenge
+* [ ] Support for multiple hidden layers
+* [ ] Support for different activation functions
+* [ ] Combine with ml5 / deeplearnjs.