work on adding comments to restaurant show page

Created CommentsController
change restaurant controller (prob was a no no)
Did some other things that simply did not work.  I'm tired. should rest and tackle this in the morning. 
Any good feedback would be welcome. 
The way you have it now, you are saying "build me a form for a user's restaurant". What you actually want is something that says "build me a form for a comment about a restaurant". How might that look? (Hint: you already have access to `@restaurant` and `@comment`).