Merge pull request #7 from meara/offerings

added offerings index page
Added bcrypt and protected attributes
Added methods to sessions controller
Aadded methods to users controller
current user helper method added, may need to fix
added validations, mass assignment, bcrypt
commented out sidebar
added navbar links
added basic info for user account profile
added edit form in user view
added forms to login and create an account
placeholder for user profile
Merge branch 'master' of https://github.com/meara/brain_trade into sessions
Merge pull request #8 from meara/sessions

Sessions & navbar
created the offerings index and show page
Merge branch 'master' of https://github.com/meara/brain_trade into offerings