enhancement: multiple property setter

[ctumolosus]

Currently if I create a Class with say 'firstName' and 'lastName' as properties, I cannot call 'instance.set({ firstName: "Ember", lastName: "Js"' });' to set multiple properties. Instead, such call would add an undefined property with the passed object as its identifier ( [object Object] ) - I think it would be a nice feature to have.

[tomdale]

Good suggestion! You can already do this with setProperties(). Would you consider filing a pull request to add this to the documentation?