Created EntriesController test file.
Added some pending tests and comments.  NOTE:  Will not actually use this spec for testing since we haven't yet learned how to TDD controllers and views.  This is just for my own reference.
Added better_errors gem
Added binding_of_caller, meta_request gems
Created EntriesController, index action
Installed meta_request gem
Added root to: entries#index and route for entries#index
Fixed typo in entries_controller
Created entries#index view
Created seed file and seeded database.
Added belongs_to :user association
Added user to Entries table in entries#index view
Added entries#show action and route
Changed user to @user
Added index & show routes for categories
Changed 'categories' to 'category'
Added Categories controller
Added Entries#show view
Added Categories#index view
Deleted Categories#show action -- not necessary