Documentation on Relations

[igorsantos07]

Fussing around the code, trying to squash a bug, I discovered there are options for relationships that would enable us to use different Parse types. On top of that, it seems the default type for hasMany relations is not supported, since it sends an object to Parse but Ember expects back an array; I guess relationship.options.array should be default, not optional? Refs #66

Is there any documentation on this? I couldn't find any...

I may be able to get a look at this if there's no one more capable for the task.