v3.0.0: Merge pull request #3 from joaquimserafim/v3

• remove the function one and the main function should handle this case

v2.0.0

• add standard as js style guide
• new functionone to pick only one property for good performance
• performance improvement for NodeJS 6 and 7

v1.0.2

rm filter, v1.0.2

v1.0.1

merge