scenario for category management
create default category in before each block
test feature add a new category
create form partial for categories with name field
render form partial in new view
add submit button to form partial
change expect category path
add h1 category name to show
test for edit a category
render form partial in edit view
add h1 title for edit category
add new category title for new
test delete a category
add delete link to edit category view
fix spelling error in test for delete category
Add index title to index view for category