Sinatra flava (Basic functionality implemented)

1. Movies.rb implemented with working "get movie" and "save movie to db" methods. (along with some tests).

2. Movies_server.rb has basic functionality implemented (Working so far: Form for adding movie title; will redirect to a page with movie details).

To-Do:
-refactor "save movie" method in Movies.rb
-fix POST '/save'
-Add more movie details (e.g. Movie Poster)
-Add css styles; Improve layout