Update to Ruby 2.1.0

Signed-off-by: David Celis <me@davidcel.is>
Fix Presenter specs after Jsonite update

Signed-off-by: David Celis <me@davidcel.is>
Add authorization endpoints

Signed-off-by: David Celis <me@davidcel.is>
Add a default_scope for Beer

Signed-off-by: David Celis <me@davidcel.is>
Add a default_scope for Brewery

Signed-off-by: David Celis <me@davidcel.is>
Add a default_scope for Event

Signed-off-by: David Celis <me@davidcel.is>
Add a default_scope for Guild

Signed-off-by: David Celis <me@davidcel.is>
Allow running single API specs

Signed-off-by: David Celis <me@davidcel.is>
Code style

Signed-off-by: David Celis <me@davidcel.is>