Initial commit
Add development group in gemfile
Add spec
Add slim support
Move `hello world` to app/views slim template
Add Lyric controller
Add activerecord
Add new dependency
Add `rake db:migrate` and `rake db:rollback`
Register Sinatra Extension
Add First migrate
Fix a missing field in user
Enable active_record in rake test
Add new dependency: rr, tux
Forbid coveral temporary
Add User model and test