Updated all dependencies except ember-data. Fixed hasmany relationships.

[joshfester]

This includes changes to the adapter, serializer, tests, and dummy app. Everything except ember-data is up to date. The dummy app is working and all tests are passing.

I'm not completely sure about how hasmany relationships should be handled. The serializer is currently checking relationship.options to see if the relationship "type" is either an array or a relation. I changed it to use a relation by default, since an array is not technically a relationship.