Added missing await in AddAsync in yeast repository
Commented out user values.
Added one more user and added that user to several breweries.
Refactored, removed whitespace
Added methods to handle brewery members.

Added GetBreweryMembers, to get all members for a bewery,
Added GetBreweryMember gets a single brewery member of a brewery,
Added DeleteBreweryMember deletes a brewery member from a brewery.