Add an example of changing a model
Add an example of changing a model

Hey there! I had a tough time figuring out how to do something pretty simple, so I figured I'd send a doc PR!
martypenner/emberx-select,arenoir/emberx-select,thefrontside/emberx-select,jeffreybiles/emberx-select,martypenner/emberx-select,jeffreybiles/emberx-select,arenoir/emberx-select,thefrontside/emberx-select