A few more news sources added...

Corrected the error when parsing www.hindu.com. Finished adding www.xinhuanet.com. The root page on this news source has a lot of links and the time taken to retrieve a web page is also very slow. Also added www.priu.gov.lk, which is the Official Website of the Government of Sri Lanka. Also tried to add www.peaceinsrilanka.org. Wasn't able to fully complete this as the articles from this news source have varying HTML templates.