Update README.md

Author: AristoChen

README.md

@@ -5,15 +5,15 @@ I've been solving LeetCode problems recently, and when I realized that why not p
 
 At the begining, I found a useful dependency in python called ```BeautifulSoup```, but it seems that it is not able to deal with dynamic website, which means that if some elements shown in a website is controlled by javascript. After serching for a while, I found ```selenium```, which automatically controll website like a human, but it seems that it is unefficient to use selenium to parse data in html, so I combine BeautifulSoup and selenium to finish this project.
 
-#### Install dependencies
+#### Install Dependencies
 ```
 # pip install bs4
 # pip install beautifulsoup
 # pip install selenium 
 ```
 
 #### Install ChromeDriver 
-This project use [chromedriver](http://chromedriver.chromium.org/) in selenium, before running this project, you have to add the downloaded executable file to PATH enviroment variable.
+This project use [Chromedriver](http://chromedriver.chromium.org/) in selenium, before running this project, you have to add the downloaded executable file to PATH enviroment variable.
 
 #### Setting
 You have to modify some of the variable in the project as shown below.
@@ -29,5 +29,8 @@ After executing the project, each LeetCode problem that you've solved will have
 
 I tried this project on Windows10 & Ubuntu, and it works fine. 
 
+#### Notice 
+If you have multiple sessions in your account, switch to the session that you want to crawl ac codes before execute.
+
 #### To Do
 1. Currently, this project will only save the latest accepted submission code.