Initial commit for IR evaluation functions.
Add a rough implicit feedback collaborative filtering example using the MovieLens 100k dataset.
Add a draft of movielens example readme.
Merge branch 'movielens_example_readme' into movielens_example
Add instructions on running the MovieLens example to the readme, clean up the example code.
Add .gitignore.
Change the readme to show the output of running the movielens example.
Remove directory name references.
Merge pull request #1 from maciejkula/movielens_example

Movielens example