Session store adapter

[mikermcneil]

Include Session model in new projects, which is automatically hooked up to Express and Socket.io for accessibility via req.session. In can also be queried like any other model and hooked up to any adapter.

[mikermcneil]

It is 50/50 we'll go this route, so leaving this open.

#405

[mikermcneil]

9 months later- while unlikely we'll add a Session model to projects (adds unnecessary complexity), it is likely that we'll go the route of a generic connect-session-sails module which plugs in the connect session to any Waterline adapter. See #405 (comment).

This is not a priority, since it's mainly just for consistency. However, it would allow for things like putting your session in postgres, mongo, mysql, or sails-disk, not just redis.

[mikermcneil]

Update- all connect session stores are now supported. See fafa2e2