Merge pull request #2 from spring-peepers-2014/ERB-CSS

added db schema && created basic layout && added signin button
added db schema
Update README.md
Update README.md
added Trello link
Merge pull request #3 from spring-peepers-2014/ERB-CSS

erb-css
if user logged in, show log out else show sign in in the header
moved user related controllers to new file user_controller