make test work with dashes and underscores (in branch 1.4)

It seems brunch 1.4 was left out of an update, so the tests in brunch-with-chaplin don't work.

For example this works with brunch 1.5 but not with brunch 1.4:
>> brunch new breakfast && cd breakfast
>> brunch test
0 tests complete (0 ms) !!

It can't find the tests because they have been changed to home-page-view.coffee from home_page_view.coffee in the brunch-with-chaplin repo. So this will make 1.4 compatible with the new templates.