http:// now automatic in text field

User will have to manually override the http:// - still need to add
a validation that will reject these urls.
Part 1 of Count number of times a url is clicked

Created a migration that makes a new field in the database for the
purposes of tracking how many people have used our short url to
visit a website. Have not implemented actuall counting logic in the
controller.
Part 2 click counter

Implemented click_counter logic to the '/:shortform' redirect page.