Update README

Fixed formatting for the checklist a little.
Add view count attribute to the questions table.
Merge branch 'master' of https://github.com/jaredsmithse/Overflow
Add call to increment viewcount in the controller.
Modify migration to make default for view_count 0
Add view count to the questions index page.
Update README

Completed view counting for questions.
Add tests to question model for views.
Merge branch 'master' of https://github.com/jaredsmithse/Overflow
Merge pull request #1 from jaredsmithse/master

View Count for Questions