update readme

Author: zhiyzuo

README.md

@@ -13,15 +13,17 @@ This is a public repository for [Jupyter notebooks](http://jupyter.org/) with in
 
 ### Topics:
 
-_Continuously growing... Last updated 10-21-2018_
+_Continuously growing... Last updated 10-28-2018_
 
 - [Installation and environment setup :wrench:](https://github.com/zhiyzuo/python-tutorial/blob/master/0-Installation-Environment-Setup.ipynb)
 - [Variables, data structures, and control logics :twisted_rightwards_arrows:](https://github.com/zhiyzuo/python-tutorial/blob/master/1-Variables-Data_Structures-Control_Logic.ipynb)
-- [Functions, external libraries, and File I/O :page_facing_up:](https://github.com/zhiyzuo/python-tutorial/blob/master/2-Functions-External_Libraries-File_IO.ipynb)
+- [Functions, external libraries, and file I/O :page_facing_up:](https://github.com/zhiyzuo/python-tutorial/blob/master/2-Functions-External_Libraries-File_IO.ipynb)
 - [Network Analysis with Networkx :globe_with_meridians:](https://github.com/zhiyzuo/python-tutorial/blob/master/3-Network-Analysis-with-NetworkX.ipynb)
 - [Visualization using Matplotlib :art:](https://github.com/zhiyzuo/python-tutorial/blob/master/4-Visualization-with-Matplotlib.ipynb)
-- [Getting web data :one:: Using APIs :signal_strength:](https://github.com/zhiyzuo/python-tutorial/blob/master/5-Getting-Data-Using-APIs.ipynb)
-- [Getting web data :two:: Manual Parsing :muscle:](https://github.com/zhiyzuo/python-tutorial/blob/master/6-Getting-Data-from-Web.ipynb)
+- [Getting Web data :one:: Using APIs :signal_strength:](https://github.com/zhiyzuo/python-tutorial/blob/master/5-Getting-Data-Using-APIs.ipynb)
+- [Getting Web data :two:: Manual parsing :muscle:](https://github.com/zhiyzuo/python-tutorial/blob/master/6-Getting-Data-from-Web.ipynb)
+- [Text anlaytics :scroll:](https://github.com/zhiyzuo/python-tutorial/blob/master/7-Text-Analytics-in-Python.ipynb)
+- [Data mining :chart_with_upwards_trend:](https://github.com/zhiyzuo/python-tutorial/blob/master/8-Data-Mining-With-Scikit-Learn.ipynb)
 
 Additionally, we also have a [tutorial on Bash :computer:](https://github.com/zhiyzuo/python-tutorial/blob/master/Bash-Tutorial.ipynb)!