Added script for scraping n leetcode problems according to varying difficulty

Author: AshuKV

LeetCode-Scrapper/README.md

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+# LeetCode Scraper
+This python script will let the user to scrape 'n' number of LeetCode problems from any category/difficulty in [Leetcode](https://leetcode.com/problemset/all) ,as provided by the user. The functionality of the script is to gain the information regarding particular codechef problem in different PDFs.
+
+## Prerequisites:
+Download the required packages from the following command in you terminal.(Make sure you're in the same project directory)
+
+` pip3 install -r requirements.txt `
+
+To run this script, you need to have selenium installed and configure webdriver to use chrome browser in your$PATH. You can directly download chrome driver from the link below- https://chromedriver.chromium.org/downloads. Further, if this argument is not specified, it will search path, otherwise you can set the path to chromedriver using
+
+` driver = webdriver.Chrome('/path/to/chromedriver') ` 
+
+## To Run the script:
+After installing all the requirements,run this command in your terminal.
+
+` python3 ques.py `
+
+## Output:
+This script will generate 'n' number of different PDFs in the same folder to store the problem information, specifically problem title, problem statement, test cases, and the problem link.