Merge pull request #39 from DBrodsky90/lauren

made users controller only available with signup
Home route/controller/view
*Added a home route to routes.rb
*Added a home controller
*Added a home view (search bar)
*Made images and home functional
Merge pull request #40 from DBrodsky90/david

Home route/controller/view
boards now show on user show page, edit form delete link changed to a button
Merge pull request #41 from DBrodsky90/amanda

boards now show on user show page, edit form delete link changed to a bu...
have to login to be able to add a board, edit board button now on show page, _buttons form created to create universal access to my add board and edit board buttons and methods