fleshed out layout a bit
added interest model
added factory girl
created interests controller and routes
created user interest join model and has many through relation
complete has many through associations
added user sign in / sign out link, update to interests show
interest join link and create action
Merge pull request #1 from PartyPri/interests

Interests
Upgraded to Bootstrap 3, styled flash messages, added navbar, changed join link on interest page to button, and added CSS for layout on interest show page.
Deleted extraneous stuff from navbar.
Moved header and flash messages from layout to shared partials.
'made guru link to root
merged in master
git rid of old boostrap gem
Merge pull request #2 from PartyPri/develop

Develop