packages needed:
scrapy(pip install Scrapy)
beautifulsoup(pip install beautifulsoup4)
json(in-built package)
to see data from pre-existent json files(keep all files in tact within the same folder): ./run.sh
to create dataset and then explore it(move 'json' files to some other folder(to back them up, if needed), removing them from the folder where all other files reside): ./file.sh