Added Index, Header, and Footer
Updated stylings and index/header/footer

Still some work to be done, but it’s coming together.
Fixed footer. Now it sticks to bottom
Created sessions controller
Add callback to routes
Merge pull request #1 from ZestySalsa/sessions

Sessions
modified sessions controller
Merge pull request #2 from ZestySalsa/index_page

Index page
Merge pull request #3 from ZestySalsa/sessions

modified sessions controller
fixing errors