add slope one recommender sample

Signed-off-by: noboru kudoh <noboru.kudoh@gmail.com>
ignore zip data

Signed-off-by: noboru kudoh <noboru.kudoh@gmail.com>
ignore dat file

Signed-off-by: noboru kudoh <noboru.kudoh@gmail.com>
modify expected value

Signed-off-by: noboru kudoh <noboru.kudoh@gmail.com>