Updated links to CS224D course

Course now keeps lecture slides and readings separate from videos. Updated to include these separate links. There is also a difference between the 2015 and 2016 versions, so links to both have been provided.

Author: ronrest

README.md

@@ -60,7 +60,7 @@ Please feel free to [pull requests](https://github.com/keonkim/awesome-nlp/pulls
 Intro NLP course with videos. This has no deep learning. But it is a good primer for traditional nlp.  
 
 [Stanford CS 224D: Deep Learning for NLP class](http://cs224d.stanford.edu/syllabus.html)  
-[Richard Socher](https://scholar.google.com/citations?user=FaOcyfMAAAAJ&hl=en). (2015)  Class with videos, and slides.
+Class by [Richard Socher](https://scholar.google.com/citations?user=FaOcyfMAAAAJ&hl=en). 2016 content was updated to make use of Tensorflow. Lecture slides and reading materials for 2016 class [here](http://cs224d.stanford.edu/syllabus.html). Videos for 2016 class [here](https://www.youtube.com/playlist?list=PLmImxx8Char9Ig0ZHSyTqGsdhb9weEGam). Note that there are some lecture videos missing for 2016 (lecture 9, and lectures 12 onwards). All videos for 2015 class [here](https://www.youtube.com/playlist?list=PLmImxx8Char8dxWB9LRqdpCTmewaml96q)
 
 [A Primer on Neural Network Models for Natural Language Processing](http://u.cs.biu.ac.il/~yogo/nnlp.pdf)  
 Yoav Goldberg. October 2015. No new info, 75 page summary of state of the art.