Use camel case for model scope generation

In L4, scope functions only work with camel case (http://four.laravel.com/docs/eloquent#query-scopes)
Include return value when generating scope methods

It's handy to specify return values in phpDoc comments. This patch sets the return value to the containing class.
Merge pull request #1 from claar/patch-2

Include return value when generating scope methods
Merge pull request #2 from claar/patch-1

Use camel case for model scope generation
Add phpDoc for find()
Merge pull request #3 from claar/add_find_docs

Add phpDoc for find()
Merge pull request #4 from claar/ben

Pull into my master