Implemented request and cheerio to scrape job links when a user
enters the url in the link to job posting of the add pursuit form.

Only scrapes linkedin right now. Need to add other websites and
refactor each website into each owns 'service'.
Created Job URL scraper. This scraper takes a url and then returns
company name, position title and the job details. Works for Angel
List, StackOverflow, LinkedIn and Dice right now. Need to add more
sites.
correcting conflicts from merge.