add bcrypt to gemfile
add musicians and sessions controllers with methods to support sign up, sign in and sign out
add helper method to support user sessions
add plain sign up form for new musician
add has_secure_password to database to support BCrypt
add has_secure_password to model to support bcrypt
adding routes for application
Remove default Rails README
Move nested Rails app WeJam into top level directory

In order to facilitate Heroku taking our app as "vanilla" we want to top
level directory to have a Rails app.
Merge pull request #2 from tiger-swallowtails-2014/_sign_in_sign_out_Kelly_Matt

 sign in sign out kelly matt