CateU Cooks

Thoughts on this project: 
- have a lot to learn about rspec on rails
- problematic that there is no way to check for successful saves or display errors on new Ingredients and Measurements, open for suggestions of how to restructure this
this is a good candidate for using a one-line conditional.
these are useful if you a short code block inside a conditional with only one branch

`redirect_to root_path, notice: "Recipe not found." unless @recipe`