Fixing the extending of Chaplin's optionNames in the base view

Just tried to generate a `brunch-with-chaplin` project and ran into an issue as soon as I started the application with `brunch watch --server`.

![screen shot 2013-10-25 at 14 29 52](https://f.cloud.github.com/assets/459267/1405330/ce07ab46-3d25-11e3-93c3-8e0cbfa1fcbf.png)
*[..]*
![screen shot 2013-10-25 at 14 30 02](https://f.cloud.github.com/assets/459267/1405332/d1f24770-3d25-11e3-9ef6-abe603a9287d.png)


I'm completely new to Brunch & Chaplin so I'm not entirely sure about what I'm doing, but this seems to solve the problem.