added the features and spec folders and setup the preliminary files for
generating the rspec and cucumber tests.
added the director field to the database schema.
added a new migration file for the director field in the database
Added the movie_steps.rb and search_movies_by_director.feature files and
created a path for both the edit and details pages for the movie "Alien"
and a path for the details page of "Star Wars" which will be used in later
tests.