Test refactoring, plus tests and code for Image#show action
More ImageControllerSpec refactoring
ImageController#create method for creating an image from passed in attributes.  Also, some test refactoring
Basic implementation of ImagesController#destroy
Image controller spec refactoring, render json of errors on failure of #create, change failure status code to 422
Change delete status code to 204
update method on ImagesController for updating images
Merge pull request #6 from onijim/image_controller

Image controller